'use strict'

pathUtils = require 'path'
fs = require 'fs-extra'
Mustache = require 'mustache'
coffee = require 'coffee-script'
cp = require 'child_process'

OUT_DIR = './build/qt/'
STATIC_OUT_DIR = "#{OUT_DIR}static"
QT_BUNDLE_DIR = './build/qt/'

{log, Resources} = Neft

getResourcesPaths = do ->
    onResource = (resource, target) ->
        for _, resolutions of resource.paths
            for _, path of resolutions
                target.push path: path.slice(1)
        return

    onResources = (resources, target) ->
        for prop in Object.keys(resources)
            val = resources[prop]
            if val instanceof Resources.Resource
                onResource val, target
            else if typeof val is 'object'
                onResources val, target
        return

    (resources) ->
        r = []
        onResources resources, r
        r

module.exports = (config, callback) ->
    qtRuntimePath = pathUtils.resolve __dirname, '../../../../node_modules/qt-runtime'

    mustacheFiles = []

    logtime = log.time "Copy qt files into '#{OUT_DIR}'"
    if fs.existsSync(OUT_DIR)
        fs.removeSync OUT_DIR
    fs.copySync qtRuntimePath, OUT_DIR,
        filter: (path) ->
            # omit hidden files
            if /\/\./i.test(path)
                return false
            # process mustache files later
            if /\.mustache$/.test(path)
                mustacheFiles.push path
                return false
            true
    log.end logtime

    logtime = log.time "Copy static files into '#{STATIC_OUT_DIR}'"
    fs.copySync './static', STATIC_OUT_DIR
    if fs.existsSync('./build/static')
        fs.copySync './build/static', STATIC_OUT_DIR
    log.end logtime

    # resources
    config = Object.create config
    config.resources = getResourcesPaths config.app.resources

    logtime = log.time "Prepare qt files"
    for path in mustacheFiles
        # get file
        file = fs.readFileSync path, 'utf-8'

        # get proper relative path
        relativePath = pathUtils.relative qtRuntimePath, path
        relativePath = relativePath.slice 0, -'.mustache'.length

        # compile coffee files
        if /\.coffee$/.test(relativePath)
            file = coffee.compile file, bare: true
            relativePath = relativePath.slice 0, -'.coffee'.length
            relativePath += '.js'

        # render file
        file = Mustache.render file, config

        # save file
        fs.writeFileSync pathUtils.join(OUT_DIR, relativePath), file, 'utf-8'

    log.end logtime
    callback()