Cakefile

fs            = require("fs")
path          = require("path")
{spawn, exec} = require("child_process")
stdout        = process.stdout

# Use executables installed with npm bundle.
process.env["PATH"] = "node_modules/.bin:#{process.env["PATH"]}"

# ANSI Terminal Colors.
bold  = "\033[0;1m"
red   = "\033[0;31m"
green = "\033[0;32m"
reset = "\033[0m"

# Log a message with a color.
log = (message, color, explanation) ->
  console.log color + message + reset + ' ' + (explanation or '')

# Handle error, do nothing if null
onerror = (err)->
  if err
    process.stdout.write "#{red}#{err.stack}#{reset}\n"
    process.exit -1


## Setup ##

# Setup development dependencies, not part of runtime dependencies.
task "setup", "Install development dependencies", ->
  fs.readFile "package.json", "utf8", (err, package)->
    log "Need runtime dependencies, installing into node_modules ...", green
    exec "npm bundle", onerror

    log "Need development dependencies, installing ...", green
    for name, version of JSON.parse(package).devDependencies
      log "Installing #{name} #{version}", green
      exec "npm bundle install \"#{name}@#{version}\"", onerror


## Building ##

build = (callback)->
  log "Compiling CoffeeScript to JavaScript ...", green
  exec "rm -rf lib && coffee -c -l -b -o lib src", (err, stdout)->
    callback err
task "build", "Compile CoffeeScript to JavaScript", -> build onerror

task "watch", "Continously compile CoffeeScript to JavaScript", ->
  cmd = spawn("coffee", ["-cw", "-o", "lib", "src"])
  cmd.stdout.on "data", (data)-> process.stdout.write green + data + reset
  cmd.on "error", onerror
  

clean = (callback)->
  exec "rm -rf html lib man7", callback
task "clean", "Remove temporary files and such", -> clean onerror


## Testing ##

runTests = (callback)->
  log "Running test suite ...", green
  exec "vows --spec", (err, stdout)->
    process.stdout.write stdout
    # process.stdout.write err
    # callback err # <-- prevents errors from being printed with vows!
task "test", "Run all tests", -> runTests onerror



## Documentation ##

# Markdown to HTML.
toHTML = (source, callback)->
  target = "html/#{path.basename(source, ".md").toLowerCase()}.html"
  fs.readFile "doc/layout/main.html", "utf8", (err, layout)->
    onerror err
    fs.readFile source, "utf8", (err, text)->
      onerror err
      log "Creating #{target}", green
      exec "ronn --html #{source}", (err, stdout, stderr)->
        onerror err
        [name, title] = stdout.match(/<h1>(.*)<\/h1>/)[1].split(" -- ")
        name = name.replace(/\(\d\)/, "")
        body = stdout.replace(/<h1>.*<\/h1>/, "")
        html = layout.replace("{{body}}", body).replace(/{{title}}/g, title)
        fs.writeFile target, html, "utf8", (err)->
          callback err, target

documentPages = (callback)->
  files = fs.readdirSync(".").filter((file)-> path.extname(file) == ".md").
    concat(fs.readdirSync("doc").filter((file)-> path.extname(file) == ".md").map((file)-> "doc/#{file}"))
  fs.mkdir "html", 0777, ->
    convert = ->
      if file = files.pop()
        toHTML file, (err)->
          onerror err
          convert()
      else
        process.stdout.write "\n"
        fs.readFile "html/readme.html", "utf8", (err, html)->
          html = html.replace(/<h1>(.*)<\/h1>/, "<h1>Zombie.js</h1><b>$1</b>")
          fs.writeFile "html/index.html", html, "utf8", onerror
          fs.unlink "html/readme.html", onerror
          exec "cp -fr doc/css doc/images html/", callback
    convert()

documentSource = (callback)->
  log "Documenting source files ...", green
  exec "docco src/*.coffee src/**/*.coffee", (err, stdout, stderr)->
    log stdout, green
    onerror err
    log "Copying to html/source", green
    exec "mkdir -p html && cp -rf docs/ html/source && rm -rf docs", callback

generateMan = (callback)->
  files = fs.readdirSync(".").filter((file)-> path.extname(file) == ".md").
    concat(fs.readdirSync("doc").filter((file)-> path.extname(file) == ".md").map((file)-> "doc/#{file}"))
  fs.mkdir "man7", 0777, (err)->
    log "Generating man file ...", green
    convert = ->
      if file = files.pop()
        target = "man7/#{path.basename(file, ".md").toLowerCase()}.7"
        exec "ronn --roff #{file}", (err, stdout, stderr)->
          onerror err
          log "Creating #{target}", green
          fs.writeFile target, stdout, "utf8", onerror
          convert()
      else
        exec "mv man7/readme.7 man7/zombie.7", onerror
        process.stdout.write "\n"
        callback()
    convert()

generatePDF = (callback)->
  log "Generating PDF documentation ...", green
  files = "index api selectors troubleshoot".split(" ").map((f)-> "html/#{f}.html")
  options = "--disable-javascript --outline --print-media-type --title Zombie.js --header-html doc/layout/header.html"
  toc = "--toc --toc-depth 2 --toc-no-dots --cover doc/layout/cover.html --allow doc/images --outline"
  margins = "--margin-left 20 --margin-right 20 --margin-top 20 --margin-bottom 20 --header-spacing 5"
  exec "wkhtmltopdf #{options} #{margins} #{toc} #{files.join(" ")} html/zombie.pdf", callback

generateDocs = (callback)->
  log "Generating documentation ...", green
  documentPages (err)->
    onerror err
    documentSource (err)->
      onerror err
      generatePDF (err)->
        onerror err
        generateMan callback

task "doc:pages",  "Generate documentation for main pages",    -> documentPages onerror
task "doc:source", "Generate documentation from source files", -> documentSource onerror
task "doc:man",    "Generate man pages",                       -> generateMan onerror
task "doc:pdf",    "Generate PDF documentation",               -> generatePDF onerror
task "doc",        "Generate all documentation",               -> generateDocs onerror


## Publishing ##

publishDocs = (callback)->
  log "Uploading documentation ...", green
  exec "rsync -chr --del --stats html/ labnotes.org:/var/www/zombie/", (err, stdout, stderr)->
    log stdout, green
    callback err
task "doc:publish", "Publish documentation to site", ->
  documentPages (err)->
    onerror err
    documentSource (err)->
      onerror err
      generatePDF (err)->
        onerror err
        publishDocs onerror

task "publish", "Publish new version (Git, NPM, site)", ->
  # Run tests, don't publish unless tests pass.
  runTests (err)->
    onerror err
    # Clean up temporary files and such, want to create everything from
    # scratch, don't want generated files we no longer use, etc.
    clean (err)->
      onerror err
      fs.readFile "package.json", "utf8", (err, package)->
        package = JSON.parse(package)

        # Create a tag for this version and push changes to Github.
        log "Tagging v#{package.version} ...", green
        exec "git tag v#{package.version}", (err, stdout, stderr)->
          log stdout, green
          exec "git push --tags origin master", (err, stdout, stderr)->
            log stdout, green

        # Publish documentation, need these first to generate man pages,
        # inclusion on NPM package.
        generateDocs (err)->
          onerror err

          log "Publishing to NPM ...", green
          build (err)->
            onerror err
            exec "npm publish", (err, stdout, stderr)->
              log stdout, green
              onerror err

          # We can do this in parallel.
          publishDocs onerror