diff --git a/LICENSE b/LICENSE
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+++ b/LICENSE
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+# GNU AFFERO GENERAL PUBLIC LICENSE
+
+Version 3, 19 November 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc.
+
+
+Everyone is permitted to copy and distribute verbatim copies of this
+license document, but changing it is not allowed.
+
+## Preamble
+
+The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains
+free software for all its users.
+
+When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate. Many developers of free software are heartened and
+encouraged by the resulting cooperation. However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community. It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server. Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals. This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing
+under this license.
+
+The precise terms and conditions for copying, distribution and
+modification follow.
+
+## TERMS AND CONDITIONS
+
+### 0. Definitions.
+
+"This License" refers to version 3 of the GNU Affero General Public
+License.
+
+"Copyright" also means copyright-like laws that apply to other kinds
+of works, such as semiconductor masks.
+
+"The Program" refers to any copyrightable work licensed under this
+License. Each licensee is addressed as "you". "Licensees" and
+"recipients" may be individuals or organizations.
+
+To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of
+an exact copy. The resulting work is called a "modified version" of
+the earlier work or a work "based on" the earlier work.
+
+A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user
+through a computer network, with no transfer of a copy, is not
+conveying.
+
+An interactive user interface displays "Appropriate Legal Notices" to
+the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License. If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+### 1. Source Code.
+
+The "source code" for a work means the preferred form of the work for
+making modifications to it. "Object code" means any non-source form of
+a work.
+
+A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form. A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities. However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work. For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+The Corresponding Source need not include anything that users can
+regenerate automatically from other parts of the Corresponding Source.
+
+The Corresponding Source for a work in source code form is that same
+work.
+
+### 2. Basic Permissions.
+
+All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met. This License explicitly affirms your unlimited
+permission to run the unmodified Program. The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work. This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+You may make, run and propagate covered works that you do not convey,
+without conditions so long as your license otherwise remains in force.
+You may convey covered works to others for the sole purpose of having
+them make modifications exclusively for you, or provide you with
+facilities for running those works, provided that you comply with the
+terms of this License in conveying all material for which you do not
+control copyright. Those thus making or running the covered works for
+you must do so exclusively on your behalf, under your direction and
+control, on terms that prohibit them from making any copies of your
+copyrighted material outside their relationship with you.
+
+Conveying under any other circumstances is permitted solely under the
+conditions stated below. Sublicensing is not allowed; section 10 makes
+it unnecessary.
+
+### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such
+circumvention is effected by exercising rights under this License with
+respect to the covered work, and you disclaim any intention to limit
+operation or modification of the work as a means of enforcing, against
+the work's users, your or third parties' legal rights to forbid
+circumvention of technological measures.
+
+### 4. Conveying Verbatim Copies.
+
+You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+### 5. Conveying Modified Source Versions.
+
+You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these
+conditions:
+
+- a) The work must carry prominent notices stating that you modified
+ it, and giving a relevant date.
+- b) The work must carry prominent notices stating that it is
+ released under this License and any conditions added under
+ section 7. This requirement modifies the requirement in section 4
+ to "keep intact all notices".
+- c) You must license the entire work, as a whole, under this
+ License to anyone who comes into possession of a copy. This
+ License will therefore apply, along with any applicable section 7
+ additional terms, to the whole of the work, and all its parts,
+ regardless of how they are packaged. This License gives no
+ permission to license the work in any other way, but it does not
+ invalidate such permission if you have separately received it.
+- d) If the work has interactive user interfaces, each must display
+ Appropriate Legal Notices; however, if the Program has interactive
+ interfaces that do not display Appropriate Legal Notices, your
+ work need not make them do so.
+
+A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+### 6. Conveying Non-Source Forms.
+
+You may convey a covered work in object code form under the terms of
+sections 4 and 5, provided that you also convey the machine-readable
+Corresponding Source under the terms of this License, in one of these
+ways:
+
+- a) Convey the object code in, or embodied in, a physical product
+ (including a physical distribution medium), accompanied by the
+ Corresponding Source fixed on a durable physical medium
+ customarily used for software interchange.
+- b) Convey the object code in, or embodied in, a physical product
+ (including a physical distribution medium), accompanied by a
+ written offer, valid for at least three years and valid for as
+ long as you offer spare parts or customer support for that product
+ model, to give anyone who possesses the object code either (1) a
+ copy of the Corresponding Source for all the software in the
+ product that is covered by this License, on a durable physical
+ medium customarily used for software interchange, for a price no
+ more than your reasonable cost of physically performing this
+ conveying of source, or (2) access to copy the Corresponding
+ Source from a network server at no charge.
+- c) Convey individual copies of the object code with a copy of the
+ written offer to provide the Corresponding Source. This
+ alternative is allowed only occasionally and noncommercially, and
+ only if you received the object code with such an offer, in accord
+ with subsection 6b.
+- d) Convey the object code by offering access from a designated
+ place (gratis or for a charge), and offer equivalent access to the
+ Corresponding Source in the same way through the same place at no
+ further charge. You need not require recipients to copy the
+ Corresponding Source along with the object code. If the place to
+ copy the object code is a network server, the Corresponding Source
+ may be on a different server (operated by you or a third party)
+ that supports equivalent copying facilities, provided you maintain
+ clear directions next to the object code saying where to find the
+ Corresponding Source. Regardless of what server hosts the
+ Corresponding Source, you remain obligated to ensure that it is
+ available for as long as needed to satisfy these requirements.
+- e) Convey the object code using peer-to-peer transmission,
+ provided you inform other peers where the object code and
+ Corresponding Source of the work are being offered to the general
+ public at no charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal,
+family, or household purposes, or (2) anything designed or sold for
+incorporation into a dwelling. In determining whether a product is a
+consumer product, doubtful cases shall be resolved in favor of
+coverage. For a particular product received by a particular user,
+"normally used" refers to a typical or common use of that class of
+product, regardless of the status of the particular user or of the way
+in which the particular user actually uses, or expects or is expected
+to use, the product. A product is a consumer product regardless of
+whether the product has substantial commercial, industrial or
+non-consumer uses, unless such uses represent the only significant
+mode of use of the product.
+
+"Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to
+install and execute modified versions of a covered work in that User
+Product from a modified version of its Corresponding Source. The
+information must suffice to ensure that the continued functioning of
+the modified object code is in no case prevented or interfered with
+solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information. But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or
+updates for a work that has been modified or installed by the
+recipient, or for the User Product in which it has been modified or
+installed. Access to a network may be denied when the modification
+itself materially and adversely affects the operation of the network
+or violates the rules and protocols for communication across the
+network.
+
+Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+### 7. Additional Terms.
+
+"Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law. If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it. (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.) You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders
+of that material) supplement the terms of this License with terms:
+
+- a) Disclaiming warranty or limiting liability differently from the
+ terms of sections 15 and 16 of this License; or
+- b) Requiring preservation of specified reasonable legal notices or
+ author attributions in that material or in the Appropriate Legal
+ Notices displayed by works containing it; or
+- c) Prohibiting misrepresentation of the origin of that material,
+ or requiring that modified versions of such material be marked in
+ reasonable ways as different from the original version; or
+- d) Limiting the use for publicity purposes of names of licensors
+ or authors of the material; or
+- e) Declining to grant rights under trademark law for use of some
+ trade names, trademarks, or service marks; or
+- f) Requiring indemnification of licensors and authors of that
+ material by anyone who conveys the material (or modified versions
+ of it) with contractual assumptions of liability to the recipient,
+ for any liability that these contractual assumptions directly
+ impose on those licensors and authors.
+
+All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10. If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term. If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions; the
+above requirements apply either way.
+
+### 8. Termination.
+
+You may not propagate or modify a covered work except as expressly
+provided under this License. Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+However, if you cease all violation of this License, then your license
+from a particular copyright holder is reinstated (a) provisionally,
+unless and until the copyright holder explicitly and finally
+terminates your license, and (b) permanently, if the copyright holder
+fails to notify you of the violation by some reasonable means prior to
+60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License. If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+### 9. Acceptance Not Required for Having Copies.
+
+You are not required to accept this License in order to receive or run
+a copy of the Program. Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance. However,
+nothing other than this License grants you permission to propagate or
+modify any covered work. These actions infringe copyright if you do
+not accept this License. Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+### 10. Automatic Licensing of Downstream Recipients.
+
+Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License. You are not responsible
+for enforcing compliance by third parties with this License.
+
+An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations. If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License. For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+### 11. Patents.
+
+A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+A contributor's "essential patent claims" are all patent claims owned
+or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+A patent license is "discriminatory" if it does not include within the
+scope of its coverage, prohibits the exercise of, or is conditioned on
+the non-exercise of one or more of the rights that are specifically
+granted under this License. You may not convey a covered work if you
+are a party to an arrangement with a third party that is in the
+business of distributing software, under which you make payment to the
+third party based on the extent of your activity of conveying the
+work, and under which the third party grants, to any of the parties
+who would receive the covered work from you, a discriminatory patent
+license (a) in connection with copies of the covered work conveyed by
+you (or copies made from those copies), or (b) primarily for and in
+connection with specific products or compilations that contain the
+covered work, unless you entered into that arrangement, or that patent
+license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+### 12. No Surrender of Others' Freedom.
+
+If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under
+this License and any other pertinent obligations, then as a
+consequence you may not convey it at all. For example, if you agree to
+terms that obligate you to collect a royalty for further conveying
+from those to whom you convey the Program, the only way you could
+satisfy both those terms and this License would be to refrain entirely
+from conveying the Program.
+
+### 13. Remote Network Interaction; Use with the GNU General Public License.
+
+Notwithstanding any other provision of this License, if you modify the
+Program, your modified version must prominently offer all users
+interacting with it remotely through a computer network (if your
+version supports such interaction) an opportunity to receive the
+Corresponding Source of your version by providing access to the
+Corresponding Source from a network server at no charge, through some
+standard or customary means of facilitating copying of software. This
+Corresponding Source shall include the Corresponding Source for any
+work covered by version 3 of the GNU General Public License that is
+incorporated pursuant to the following paragraph.
+
+Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the work with which it is combined will remain governed by version
+3 of the GNU General Public License.
+
+### 14. Revised Versions of this License.
+
+The Free Software Foundation may publish revised and/or new versions
+of the GNU Affero General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program
+specifies that a certain numbered version of the GNU Affero General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU Affero General Public License, you may choose any version ever
+published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions
+of the GNU Affero General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+### 15. Disclaimer of Warranty.
+
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
+WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
+PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
+DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
+CORRECTION.
+
+### 16. Limitation of Liability.
+
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
+CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+## How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively state
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+
+ Copyright (C)
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as
+ published by the Free Software Foundation, either version 3 of the
+ License, or (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source. For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code. There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for
+the specific requirements.
+
+You should also get your employer (if you work as a programmer) or
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. For more information on this, and how to apply and follow
+the GNU AGPL, see .
diff --git a/README.md b/README.md
index 37c6aea..edba6a3 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# Project Name
+# PiWebSense
## Milestones
@@ -14,27 +14,25 @@ The Raspberry Pi should be integratable to a Home Assistant Server and be used a
Data should be sent and received via MQTT to an ESP32. The Pi acts as a sensor gateway.
-## Tech Stack
+## Tech Stack / Hardware Requirements
-- **Raspberry Pi model**:
-- **Programming languages**: Python
-- **Frameworks/tools/Libraries**: (e.g., Flask, GPIO Zero)
+- **Raspberry Pi**: Model 4
+- **Programming languages**: Python, jinja2
+- **Frameworks/tools/Libraries**:
- Webserver:
- - Python Http Server
+ - Flask
- Json
- - Sensors:
-
-## Hardware Requirements
-
-- Raspberry Pi with [model/specs]
+ - Sensors: Temperature,
- **Sensors**:
- - LER (Lichtsensor)
- - Temperatur und Luftfeuchtigkeit
+ - LDR (Lightsensor)
+ - Sound Detector
+ - Temperature
+ - Temperature and humidity
- ...
## Docs
-- Json format:
+- The data needs to be providet in the following format:
```Json
{
@@ -78,6 +76,8 @@ Data should be sent and received via MQTT to an ESP32. The Pi acts as a sensor g
This file holds the requirements for pip
- `shell.nix`
This file is only used on nixos and for the nix packagemananger
+- `.envrc`
+ This is also a bit of linuz nixos magic to automatically set up the development environment using direnv
- `main.py`
The main file for the project
@@ -112,4 +112,17 @@ Data should be sent and received via MQTT to an ESP32. The Pi acts as a sensor g
### License
-MIT
+PiWebSense
+Copyright (C) 2025 Kieler, Chiara
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License Version 3.0 as published by
+the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with this program. If not, see .
diff --git a/shell.nix b/shell.nix
index 7c8b82d..c5f95c1 100644
--- a/shell.nix
+++ b/shell.nix
@@ -5,10 +5,11 @@ pkgs.mkShell {
(pkgs.python3.withPackages (ps: with ps; [
matplotlib
numpy
+ flask
]))
];
- shellHook = ''
- export SHELL=${pkgs.zsh}/bin/zsh
- exec ${pkgs.zsh}/bin/zsh
- '';
+ # shellHook = ''
+ # export SHELL=${pkgs.zsh}/bin/zsh
+ # exec ${pkgs.zsh}/bin/zsh
+ # '';
}
diff --git a/webserver/plots/sensor_001.png b/webserver/plots/sensor_001.png
deleted file mode 100644
index c7e6383..0000000
Binary files a/webserver/plots/sensor_001.png and /dev/null differ
diff --git a/webserver/plots/sensor_002.png b/webserver/plots/sensor_002.png
deleted file mode 100644
index 4b768f0..0000000
Binary files a/webserver/plots/sensor_002.png and /dev/null differ
diff --git a/webserver/plots/sensor_003.png b/webserver/plots/sensor_003.png
deleted file mode 100644
index 930084a..0000000
Binary files a/webserver/plots/sensor_003.png and /dev/null differ
diff --git a/webserver/server.py b/webserver/server.py
index 2b45460..d6235fe 100644
--- a/webserver/server.py
+++ b/webserver/server.py
@@ -1,114 +1,223 @@
-from http.server import BaseHTTPRequestHandler, HTTPServer
from datetime import datetime
+import re
+from flask import Flask, send_from_directory, render_template
import json
import matplotlib.pyplot as plt
-import mimetypes
-
-mimetypes.add_type("image/png", ".png")
-
-# Opening JSON file
-f = open("data.json")
-
-# returns JSON object as a dictionary
-data = json.load(f)
-sensors = dict()
-
-# Iterating through the json list
-for i in data["sensors"]:
- sensors[i["id"]] = [i["type"], i["unit"], i["readings"]]
-
-# Closing file
-f.close()
-
-
-def create_plot(id: str, unit: str, xaxis: list, yaxis: list):
- plt.plot(xaxis, yaxis)
- plt.title(id)
- plt.xlabel("Time")
- plt.ylabel(unit)
- plt.savefig(f"plots/{id}.png") # Save to file
- plt.close()
-
+# Global Variables:
+jsonpath = "data.json"
htmldata = ""
-def sortfunc(körber):
- return körber
+# class Entries:
+# def __init__(self, id: str, ts: list, value: list):
+# self.id = id
+# templist: list = []
+# for i in range(len(ts)):
+# templist.append([ts[i], value[i]])
+# self.entries: list = templist
+#
+# def printEntries(self):
+# print(self.entries)
+#
+#
+# tese = Entries("sensor0", [1, 2, 3, 4], [10, 20, 30, 40])
+# tese.printEntries()
-for i in sensors:
- type = sensors[i][0]
- unit = sensors[i][1]
- readings = ""
- datapoints: list = []
- sensorrange = len(sensors[i][2]) if len(sensors[i][2]) < 5 else 5
- for j in range(sensorrange):
- datapoints.append([])
- ts = sensors[i][2][j]["ts"]
- value = sensors[i][2][j]["value"]
- datapoints[j].append(ts)
- datapoints[j].append(value)
- datapoints[j].append(unit)
- datapoints.sort(key=sortfunc, reverse=True)
+class Sensor:
+ def __init__(self, id: str, unit: str, type: str, ts: list, value: list):
+ self.id = id
+ self.unit = unit
+ self.type = type
+ self.ts: list = ts
+ self.values: list = value
+ self.timeonly: list = []
+ self.timedate: list = []
+ for i in ts:
+ # print(i)
+ self.timeonly.append(datetime.fromtimestamp(int(i)).strftime("%H:%M.%S"))
+ self.timedate.append(
+ datetime.fromtimestamp(i).strftime("%d.%m.%Y %H:%M.%S")
+ )
- graphdata: list = [[], []]
- for j in datapoints:
- ts = j[0]
- time = datetime.fromtimestamp(ts).strftime("%d.%m.%Y %H:%M.%S")
- timeNoDate = datetime.fromtimestamp(ts).strftime("%H:%M.%S")
- value = j[1]
- unit = j[2]
- # print(f"{time} {j}")
- readings += f"{time}> {value}{unit} "
- graphdata[0].append(timeNoDate)
- graphdata[1].append(value)
+ def getId(self):
+ return self.id
- create_plot(i, unit, graphdata[0], graphdata[1])
+ def getUnit(self):
+ return self.unit
- htmldata += f"""
-
Id: {i}
-
Type: {type}
-
Readings:
-
- {readings}
-
-
-
- """
+ def getType(self):
+ return self.type
-html = f"""
-
-
-
-
- Sensor Data
-
-
-
- {htmldata}
-
-
-"""
+ def getReadings(self, limit=5, reversed=True, timetype="ts"):
+ datadic: dict = {}
+ match timetype:
+ case "ts":
+ for i in range(limit if limit < len(self.ts) else len(self.ts)):
+ datadic[self.ts[i]] = self.values[i]
+ case "time":
+ for i in range(limit if limit < len(self.ts) else len(self.ts)):
+ datadic[self.timeonly[i]] = self.values[i]
+ case "timedate":
+ for i in range(limit if limit < len(self.ts) else len(self.ts)):
+ datadic[self.timedate[i]] = self.values[i]
+ case _:
+ return "ERROR: timetype must be one of 'ts', 'time', 'timedate'"
+ return dict(sorted(datadic.items(), reverse=reversed))
+
+ # This only exist because jinja2 can not accept arguments :(
+ def getReadingsTimeDate(self):
+ return self.getReadings(timetype="timedate")
+
+ def getReadingsTime(self):
+ return self.getReadings(timetype="time")
+
+ def getValueByTimestamp(self, ts: int):
+ c = 0
+ for i in self.ts:
+ c += 1
+ if i == ts:
+ return self.values[c]
+
+ def getTimestampByValue(self, value: float):
+ values: list = []
+ for i in range(len(self.values)):
+ if self.values[i] == value:
+ values.append(self.ts[i])
+ return values
+
+ def renderPlot(self):
+ plt.plot(self.timeonly, self.values)
+ plt.title(self.id)
+ plt.xlabel("Time")
+ plt.ylabel(self.unit)
+ path = f"plots/{self.id}.png"
+ plt.savefig(f"static/{path}") # Save to file
+ plt.close()
+ return path
+
+ # def formatLine(self, ts: int):
+ # for i in self.ts:
+ # if i == ts:
+ # return f"{self.timedate}> {self.values[]}"
-class MyHandler(BaseHTTPRequestHandler):
- def do_GET(self):
- self.send_response(200)
- # self.send_header("Content-type", "text/html")
- self.end_headers()
- self.wfile.write(html.encode("utf-8"))
+# Json
+f = open(jsonpath)
+jsondata = json.load(f) # returns JSON object as a dictionary
+# sensordict = dict()
+sensors: dict = {}
+for i in jsondata["sensors"]: # Iterating through the json list
+ timestamps: list = []
+ values: list = []
+ # print(len(i["readings"]))
+ for j in range(len(i["readings"])):
+ timestamps.append(i["readings"][j]["ts"])
+ values.append(i["readings"][j]["value"])
+ # print(i)
+ # print(i["readings"][1])
+ # print("\n")
+ # sensordict[i["id"]] = [i["type"], i["unit"], i["readings"]]
+ # print(sensordict[i["id"]])
+ sensors[i["id"]] = Sensor(i["id"], i["unit"], i["type"], timestamps, values)
+
+
+f.close()
+print("\n")
+# print(sensordict)
+print(sensors)
+# print(sensors["sensor_001"].getReadings(limit=2, reversed=True, timetype="time"))
+
+# for i in sensordict:
+# type = sensordict[i][0]
+# unit = sensordict[i][1]
+# readings = ""
+# datapoints: list = []
+# sensorrange = len(sensordict[i][2]) if len(sensordict[i][2]) < 5 else 5
+# for j in range(sensorrange):
+# datapoints.append([])
+# ts = sensordict[i][2][j]["ts"]
+# value = sensordict[i][2][j]["value"]
+# datapoints[j].append(ts)
+# datapoints[j].append(value)
+# datapoints[j].append(unit)
+# datapoints.sort(reverse=True)
+#
+# graphdata: list = [[], []]
+# for j in datapoints:
+# ts = j[0]
+# time = datetime.fromtimestamp(ts).strftime("%d.%m.%Y %H:%M.%S")
+# timeNoDate = datetime.fromtimestamp(ts).strftime("%H:%M.%S")
+# value = j[1]
+# unit = j[2]
+# # print(f"{time} {j}")
+# readings += f"{time}> {value}{unit} "
+# graphdata[0].append(timeNoDate)
+# graphdata[1].append(value)
+#
+# # create_plot(i, unit, graphdata[0], graphdata[1])
+#
+# htmldata += f"""
+#
Id: {i}
+#
Type: {type}
+#
Readings:
+#
+# {readings}
+#
+#
+# """
+#
+# html = f"""
+#
+#
+#
+#
+# Sensor Data
+#
+#
+#
+# {htmldata}
+#
+#
+# """
+
+
+# class MyHandler(BaseHTTPRequestHandler):
+# def do_GET(self):
+# self.send_response(200)
+# # self.send_header("Content-type", "text/html")
+# self.end_headers()
+# self.wfile.write(html.encode("utf-8"))
+#
+#
+# if __name__ == "__main__":
+# server_address = ("", 8000)
+# httpd = HTTPServer(server_address, MyHandler)
+# print("Serving on http://localhost:8000")
+# httpd.serve_forever()
+
+app = Flask(__name__)
+
+
+@app.route("/")
+def index():
+ return render_template("index.html", data=sensors)
+
+
+# @app.before_request
+# def before_request():
+# for sensor in sensors.values():
+# print(sensor)
+# sensor.renderPlot()
if __name__ == "__main__":
- server_address = ("", 8000)
- httpd = HTTPServer(server_address, MyHandler)
- print("Serving on http://localhost:8000")
- httpd.serve_forever()
+ app.run(debug=True)
diff --git a/webserver/favicon.ico b/webserver/static/favicon.ico
similarity index 100%
rename from webserver/favicon.ico
rename to webserver/static/favicon.ico
diff --git a/webserver/static/plots/sensor_001.png b/webserver/static/plots/sensor_001.png
new file mode 100644
index 0000000..78d8e46
Binary files /dev/null and b/webserver/static/plots/sensor_001.png differ
diff --git a/webserver/static/plots/sensor_002.png b/webserver/static/plots/sensor_002.png
new file mode 100644
index 0000000..359be6c
Binary files /dev/null and b/webserver/static/plots/sensor_002.png differ
diff --git a/webserver/static/plots/sensor_003.png b/webserver/static/plots/sensor_003.png
new file mode 100644
index 0000000..60d677c
Binary files /dev/null and b/webserver/static/plots/sensor_003.png differ
diff --git a/webserver/plots/test.png b/webserver/static/plots/test.png
similarity index 100%
rename from webserver/plots/test.png
rename to webserver/static/plots/test.png
diff --git a/webserver/templates/index.html b/webserver/templates/index.html
new file mode 100644
index 0000000..373749b
--- /dev/null
+++ b/webserver/templates/index.html
@@ -0,0 +1,34 @@
+
+
+
+
+
+ Sensor Data
+
+
+
+
-  + '.png') }})
+