#compdef yarn
# ------------------------------------------------------------------------------
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# ------------------------------------------------------------------------------
# Description
# -----------
#
#  Completion script for yarn (https://yarnpkg.com/)
#
# ------------------------------------------------------------------------------
# Authors
# -------
#
#  * Massimiliano Torromeo <massimiliano.torromeo@gmail.com>
#
# ------------------------------------------------------------------------------

_commands=(
  'access'
  'autoclean:Clean and remove unnecessary files from package dependencies'
  'cache:List or clean every cached package'
  "check:Verify package dependencies agains yarn's lock file"
  'config:Manages the yarn configuration files'
  'generate-lock-entry:Generates a lock file entry'
  'global:Install packages globally on your operating system'
  'help:Show information about a command'
  'import:Generate yarn.lock from an existing npm-installed node_modules folder'
  'info:Show information about a package'
  'init:Interactively creates or updates a package.json file'
  'install:Install all the dependencies listed within package.json'
  'licenses:List licenses for installed packages'
  'link:Symlink a package folder during development'
  'list:List installed packages'
  'login:Store registry username and email'
  'logout:Clear registry username and email'
  'outdated:Check for outdated package dependencies'
  'owner:Manage package owners'
  'pack:Create a compressed gzip archive of package dependencies'
  'publish:Publish a package to the npm registry'
  'run:Run a defined package script'
  'tag:Add, remove, or list tags on a package'
  'team:Maintain team memberships'
  'unlink:Unlink a previously created symlink for a package'
  'version:Update the package version'
  'versions:Display version information of currently installed Yarn, Node.js, and its dependencies'
  'why:Show information about why a package is installed'
)

_global_commands=(
  'add:Installs a package and any packages that it depends on'
  'bin:Displays the location of the yarn bin folder'
  'remove:Remove installed package from dependencies updating package.json'
  'upgrade:Upgrades packages to their latest version based on the specified range'
  'upgrade-interactive:Interactively upgrade packages'
)

_yarn_commands_scripts() {
  local -a scripts
  scripts=($(yarn run --json 2>/dev/null | sed -E '/Commands available|possibleCommands/!d;s/.*Commands available from binary scripts: ([^"]+)".*/\1/;s/.*"items":\[([^]]+).*/\1/;s/[" ]//g' | tr , '\n' | sed -e 's/:/\\:/g'))
  _describe 'command or script' _commands -- _global_commands -- scripts
}

_yarn_scripts() {
  local -a commands binaries scripts
  local -a scriptNames scriptCommands
  local i runJSON

  runJSON=$(yarn run --json 2>/dev/null)
  # Some sed utilities (e.g. Mac OS / BSD) don't interpret `\n` in a replacement
  # pattern as a newline. See https://superuser.com/q/307165
  binaries=($(sed -E '/Commands available/!d;s/.*Commands available from binary scripts: ([^"]+)".*/\1/;s/.*"items":\[([^]]+).*/\1/;s/[" ]//g;s/:/\\:/g;s/,/\'$'\n/g' <<< "$runJSON"))
  scriptNames=($(sed -E '/possibleCommands/!d;s/.*"items":\[([^]]+).*/\1/;s/[" ]//g;s/:/\\:/g;s/,/\'$'\n/g' <<< "$runJSON"))
  scriptCommands=("${(@f)$(sed -E '/possibleCommands/!d;s/.*"hints":\{(.+")\}.*/\1/;s/"[^"]+"://g;s/:/\\:/g;s/","/\'$'\n/g;s/(^"|"$)//g' <<< "$runJSON")}")

  for (( i=1; i <= $#scriptNames; i++ )); do
    scripts+=("${scriptNames[$i]}:${scriptCommands[$i]}")
  done

  commands=($scripts $binaries)
  _describe 'command' commands
}

_yarn_global_commands() {
  local -a cmds
  cmds=('ls:List installed packages')
  _describe 'command' _global_commands
}

_yarn_commands() {
  _describe 'command' _commands -- _global_commands
}

_yarn() {
  local context state state_descr line
  typeset -A opt_args

  _arguments \
    '(-h --help)'{-h,--help}'[output usage information]' \
    '(-V --version)'{-V,--version}'[output the version number]' \
    '--verbose[output verbose messages on internal operations]' \
    '--offline[trigger an error if any required dependencies are not available in local cache]' \
    '--prefer-offline[use network only if dependencies are not available in local cache]' \
    '--strict-semver' \
    '--json' \
    "--ignore-scripts[don't run lifecycle scripts]" \
    '--har[save HAR output of network traffic]' \
    '--ignore-platform[ignore platform checks]' \
    '--ignore-engines[ignore engines check]' \
    '--ignore-optional[ignore optional dependencies]' \
    '--force[install and build packages even if they were built before, overwrite lockfile]' \
    '--skip-integrity-check[run install without checking if node_modules is installed]' \
    '--check-files[install will verify file tree of packages for consistency]' \
    "--no-bin-links[don't generate bin links when setting up packages]" \
    '--flat[only allow one version of a package]' \
    '(--prod --production)'{--prod,--production} \
    "--no-lockfile[don't read or generate a lockfile]" \
    "--pure-lockfile[don't generate a lockfile]" \
    "--frozen-lockfile[don't generate a lockfile and fail if an update is needed]" \
    '--link-duplicates[create hardlinks to the repeated modules in node_modules]' \
    '--global-folder=[modules folder]:folder:_files -/' \
    '--modules-folder=[rather than installing modules into the node_modules folder relative to the cwd, output them here]:folder:_files -/' \
    '--cache-folder=[specify a custom folder to store the yarn cache]:folder:_files -/' \
    '--mutex=[use a mutex to ensure only one yarn instance is executing]:type[\:specifier]' \
    '--no-emoji[disable emoji in output]' \
    '(-s --silent)'{-s,--silent}'[skip Yarn console logs, other types of logs (script output) will be printed]' \
    '--proxy=:host:_hosts' \
    '--https-proxy=:host:_hosts' \
    '--no-progress[disable progress bar]' \
    '--network-concurrency=[maximum number of concurrent network requests]:number' \
    '--network-timeout=[TCP timeout for network requests]:milliseconds' \
    '--non-interactive[do not show interactive prompts]' \
    '1: :_yarn_commands_scripts' \
    '*:: :->command_args'


  case $state in
    command_args)
      case $words[1] in
        help)
          _arguments \
            '1: :_yarn_commands' \
        ;;

        access)
          _arguments \
            '1: :(public restricted grant revoke ls-packages ls-collaborators edit)'
        ;;

        add)
          _arguments \
            '(-D --dev)'{-D,--dev}'[install packages in devDependencies]' \
            '(-P --peer)'{-P,--peer}'[install packages in peerDependencies]' \
            '(-O --optional)'{-O,--optional}'[install packages in optionalDependencies]' \
            '(-E --exact)'{-E,--exact}'[install packages as exact versions]' \
            '(-T --tilde)'{-T,--tilde}'[install the most recent release of the packages that have the same minor version]' \
            '*:package-name:'
        ;;

        cache)
          _arguments \
            '1: :(ls dir clean)'
        ;;

        check)
          _arguments \
            '--integrity' \
            '--verify-tree'
        ;;

        config)
          _arguments \
            '1: :(set get delete list)' \
            '*:: :->config_args'
        ;;

        global)
          _arguments \
            '--prefix=[bin prefix to use to install binaries]' \
            '1: :_yarn_global_commands' \
            '*:: :->command_args'
        ;;

        info)
          _arguments \
            '1:package:' \
            '2:field'
        ;;

        init)
          _arguments \
            '(-y --yes)'{-y,--yes}'[install packages in devDependencies]'
        ;;

        licenses)
          _arguments \
            '1: :(ls generate-disclaimer)' \
        ;;

        link|unlink|outdated)
          _arguments \
            '1:package' \
        ;;

        list)
          _arguments \
            '--depth[Limit the depth of the shown dependencies]:depth'
        ;;

        owner)
          _arguments \
            '1: :(ls add rm)' \
            '*:: :->owner_args'
        ;;

        pack)
          _arguments \
            '(-f --filename)'{-f,--filename}':filename:_files'
        ;;

        publish)
          _arguments \
            '--new-version:version:' \
            '--message:message:' \
            '--no-git-tag-version' \
            '--access:access:' \
            '--tag:tag:' \
            '1: :_files'
        ;;

        remove|upgrade)
          _arguments \
            '*:package:'
        ;;

        run)
          _arguments \
            '1: :_yarn_scripts' \
            '*:: :_default'
        ;;

        tag)
          _arguments \
            '1: :(ls add rm)' \
            '*:: :->tag_args'
        ;;

        team)
          _arguments \
            '1: :(create destroy add rm ls)' \
            '*:: :->team_args'
        ;;

        upgrade-interactive)
          _arguments \
            '--latest:use the version tagged latest in the registry:'
        ;;

        version)
          _arguments \
            '--new-version:version:' \
            '--message:message:' \
            '--no-git-tag-version'
        ;;

        why)
          _arguments \
            '1:query:_files'
        ;;

        *) 
          _default
        ;;
      esac
    ;;
  esac

  case $state in
    config_args)
      case $words[1] in
        get|delete)
          _arguments \
            '1:key:'
        ;;

        set)
          _arguments \
            '(-g --global)'{-g,--global} \
            '1:key:' \
            '2:value:'
        ;;
      esac
    ;;

    owner_args)
      case $words[1] in
        ls)
          _arguments \
            '1:package:'
        ;;

        add|rm)
          _arguments \
            '1:user:' \
            '2:package:'
        ;;
      esac
    ;;

    tag_args)
      case $words[1] in
        ls)
          _arguments \
            '1:package'
        ;;

        add|rm)
          _arguments \
            '1:package:' \
            '2:tag:'
        ;;
      esac
    ;;

    team_args)
      case $words[1] in
        create|destroy|ls)
          _arguments \
            '1:scope\:team:'
        ;;

        add|rm)
          _arguments \
            '1:scope\:team:' \
            '2:user:'
        ;;
      esac
    ;;
  esac
}

_yarn "$@"

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