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api: begin a web API server with examples (#316)

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the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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Beginnings of a web API server, and a series of simple client-side web app examples.
This is an alternative to hledger-web, and for variety and research uses servant instead of yesod.

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% hledger-api(1)
%
% January 2016
# NAME
hledger-api - web API server for the hledger accounting tool
# SYNOPSIS
`hledger-api [OPTIONS]`\
`hledger api -- [OPTIONS]`
# DESCRIPTION
hledger is a cross-platform program for tracking money, time, or any other commodity,
using double-entry accounting and a simple, editable file format.
hledger is inspired by and largely compatible with ledger(1).
hledger-api is a simple web API server, intended to support
client-side web apps operating on hledger data. It comes with a series
of simple client-side app examples, which drive it's evolution.
Data is served from the usual hledger journal file:
`~/.hledger.journal`, `$LEDGER_FILE`, or another file specified with -f.
For more about the format, see hledger(1) or hledger_journal(5).
The server listens for requests on port ...
Note there is no built-in access control, so you will need to hide
hledger-api behind an authenticating proxy if you want to restrict
access.
<!-- With journal and timelog files (but not CSV files, currently) -->
<!-- the web app detects changes and will show the new data on the next request. -->
<!-- If a change makes the file unparseable, hledger-api will show an error -->
<!-- until the file has been fixed. -->
<!-- # OPTIONS -->
<!-- Note: if invoking hledger-web as a hledger subcommand, write `--` before options as shown above. -->
<!-- `--port=PORT` -->
<!-- : set the TCP port to listen on (default: 5000) -->
<!-- `-h --help` -->
<!-- : show help -->
<!-- `--version` -->
<!-- : show version information -->
<!-- ## hledger options: -->
<!-- The following common hledger options should also work: -->
<!-- `-f FILE --file=FILE` -->
<!-- : use a different input file. For stdin, use - -->
<!-- `--rules-file=RULESFILE` -->
<!-- : Conversion rules file to use when reading CSV (default: FILE.rules) -->
<!-- `--alias=OLD=NEW` -->
<!-- : display accounts named OLD as NEW -->
<!-- `--ignore-assertions` -->
<!-- : ignore any failing balance assertions in the journal -->
<!-- `--debug=N` -->
<!-- : show debug output if N is 1-9 (default: 0) -->
<!-- `-b --begin=DATE` -->
<!-- : include postings/txns on or after this date -->
<!-- `-e --end=DATE` -->
<!-- : include postings/txns before this date -->
<!-- `-p --period=PERIODEXP` -->
<!-- : set start date, end date, and/or reporting interval all at once (overrides the flags above) -->
<!-- `--date2 --aux-date` -->
<!-- : use postings/txns' secondary dates instead -->
<!-- `-C --cleared` -->
<!-- : include only cleared postings/txns -->
<!-- `--pending` -->
<!-- : include only pending postings/txns -->
<!-- `-U --uncleared` -->
<!-- : include only uncleared (and pending) postings/txns -->
<!-- `-R --real` -->
<!-- : include only non-virtual postings -->
<!-- `--depth=N` -->
<!-- : hide accounts/postings deeper than N -->
<!-- `-E --empty` -->
<!-- : show empty/zero things which are normally omitted -->
<!-- `-B --cost` -->
<!-- : show amounts in their cost price's commodity -->
# ENVIRONMENT
**LEDGER_FILE**
sets the default journal file path. If not set, it is `~/.hledger.journal`.
# FILES
Reads data from a hledger journal file (`$LEDGER_FILE` or
`~/.hledger.journal` by default), or a CSV file plus associated CSV
rules file.
# BUGS
The need to precede options with `--` when invoked from hledger is awkward.
<!-- `-f-` doesn't work (hledger-web can't read from stdin). -->
<!-- Query arguments and some applicable hledger options probably aren't supported. -->
<!-- Does not work in text-mode browsers. -->
<!-- Does not work well on small screens. -->
<!-- The auto-exit feature was added to avoid leaving stray processes, eg on Windows. -->
<!-- It is not well tested. -->
<!-- If you start two instances on the same port, the second one will -->
<!-- appear to run normally, but you will be seeing pages served from the -->
<!-- first one. -->

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-- This file has been generated from package.yaml by hpack version 0.5.4.
--
-- see: https://github.com/sol/hpack
name: hledger-api
version: 0.27.98
synopsis: Web API server for the hledger accounting tool
description: This is a simple web API server for hledger data.
It comes with a series of simple client-side web app examples.
.
hledger is a cross-platform program for tracking money, time, or
any other commodity, using double-entry accounting and a simple,
editable file format. It is inspired by and largely compatible
with ledger(1). hledger provides command-line, curses and web
interfaces, and aims to be a reliable, practical tool for daily
use.
category: Finance
stability: alpha
homepage: http://hledger.org
bug-reports: http://bugs.hledger.org
author: Simon Michael <simon@joyful.com>
maintainer: Simon Michael <simon@joyful.com>
license: GPL
build-type: Simple
cabal-version: >= 1.10
extra-source-files:
CHANGES
source-repository head
type: git
location: https://github.com/simonmichael/hledger
executable hledger-api
main-is: hledger-api.hs
ghc-options: -threaded
cpp-options: -DVERSION="0.27.98"
build-depends:
hledger-lib == 0.27
, hledger == 0.27
, base >= 4 && < 5
default-language: Haskell2010

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main :: IO ()
main = putStrLn "hledger-api ok"

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# hpack specification for generating the cabal file
# https://github.com/sol/hpack#readme
# http://www.haskell.org/cabal/release/cabal-latest/doc/users-guide/authors.html
#
# as of hpack 0.5.4 these must be added manually:
# - tested-with
# - flags
# - benchmarks
# - conditional blocks
name : hledger-api
version : '0.27.98'
stability : alpha
category : Finance
synopsis : Web API server for the hledger accounting tool
description : |
This is a simple web API server for hledger data.
It comes with a series of simple client-side web app examples.
hledger is a cross-platform program for tracking money, time, or
any other commodity, using double-entry accounting and a simple,
editable file format. It is inspired by and largely compatible
with ledger(1). hledger provides command-line, curses and web
interfaces, and aims to be a reliable, practical tool for daily
use.
license : GPL
author : Simon Michael <simon@joyful.com>
maintainer : Simon Michael <simon@joyful.com>
github : simonmichael/hledger
homepage : http://hledger.org
bug-reports : http://bugs.hledger.org
# tested-with : GHC==7.10.3
extra-source-files:
- CHANGES
- examples/
# XXX not supported
# flag threaded
# Description: Build with support for multithreaded execution
# Default: True
# flag dev
# Description: Turn on development settings, like auto-reload templates.
# Default: False
# flag library-only
# Description: Build for use with "yesod devel"
# Default: False
# flag old-locale
# description: A compatibility flag, set automatically by cabal.
# If false then depend on time >= 1.5,
# if true then depend on time < 1.5 together with old-locale.
# default: False
# dependencies:
# - hledger-lib == 0.27
# - hledger == 0.27
# - base >= 4 && < 5
# - base-compat >= 0.8.1
# - blaze-html
# - blaze-markup
# - bytestring
# - clientsession
# - cmdargs >= 0.10 && < 0.11
# - data-default
# - directory
# - filepath
# - hjsmin
# - http-conduit
# - http-client
# - HUnit
# - conduit-extra >= 1.1
# - parsec >= 3
# - safe >= 0.2
# - shakespeare >= 2.0
# - template-haskell
# - text
# - transformers
# - wai
# - wai-extra
# - wai-handler-launch >= 1.3
# - warp
# - yaml
# - json
# # if flag(old-locale)
# # build-depends: time < 1.5, old-locale
# # else
# # build-depends: time >= 1.5
# - time >= 1.5
# ghc-options:
# -Wall
# -fno-warn-unused-do-bind
# -fno-warn-name-shadowing
# -fno-warn-missing-signatures
# -fno-warn-type-defaults
# -fno-warn-orphans
# XXX not supported
# extensions:
# CPP
# MultiParamTypeClasses
# NoImplicitPrelude
# OverloadedStrings
# QuasiQuotes
# RecordWildCards
# TemplateHaskell
# TypeFamilies
# # -- seem to not be needed at present:
# # -- GADTs
# # -- GeneralizedNewtypeDeriving
# # -- FlexibleContexts
# # -- EmptyDataDecls
# # -- NoMonomorphismRestriction
cpp-options: -DVERSION="0.27.98"
# XXX
# if flag(dev) || flag(library-only)
# cpp-options: -DDEVELOPMENT
# library:
# # source-dirs: . # XXX includes Setup and uncommitted stuff
# exposed-modules:
# - Lib
# tests:
# test:
# source-dirs: tests
# main: test.hs
# dependencies:
# - hledger-api
# - hspec
# - yesod-test
executables:
hledger-api:
# XXX
# if flag(library-only)
# buildable: False
# if flag(threaded)
# ghc-options: -threaded
ghc-options:
-threaded
# if flag(dev)
# ghc-options: -O0
# source-dirs: app
main: hledger-api.hs
dependencies:
- hledger-lib == 0.27
- hledger == 0.27
- base >= 4 && < 5

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- hledger - hledger
- hledger-ui - hledger-ui
- hledger-web - hledger-web
- hledger-api
#flags: #flags: