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#compdef gradle gradlew

local curcontext="$curcontext" ret=1 state state_descr line
local gradle_inspect=yes cache_policy tag_order
local -A opt_args
local -a gradle_group_tasks gradle_all_tasks

# Set the caching policy to invalidate cache if the build file is newer than the cache.
_gradle_caching_policy() {
    [[ $gradle_buildfile -nt $1 ]]
}

zstyle -s ":completion:*:*:$service:*" cache-policy cache_policy || \
    zstyle ":completion:*:*:$service:*" cache-policy _gradle_caching_policy

# By default, we only complete main tasks (belonging to a group). Secondary tasks are
# completed if no main tasks are found.
zstyle -a ":completion:*:*:$service:*" tag-order tag_order || \
    zstyle ":completion:*:*:$service:*" tag-order 'gradle_group' 'gradle_all'

# The completion inspects the current build file to find tasks to complete. Setting
# this style to 'no' or 'false' turns off inspection. In that case only the built-in tasks
# are completed.
zstyle -T ":completion:*:*:$service:*" gradle-inspect || gradle_inspect=no

_arguments -C \
    '(-)'{-\?,-h,--help}'[Shows a help message.]' \
    {-a,--no-rebuild}'[Do not rebuild project dependencies.]' \
    {-b,--build-file}'[Specifies the build file.]:build file:_files -g "*.gradle(-.)"' \
    {-C,--cache}'[Specifies how compiled build scripts should be cached.]:cache policy:(on rebuild)' \
    {-c,--settings-file}'[Specifies the settings file.]:settings file:_files -g "*.properties(-.)"' \
    '--continue[Continues task execution after a task failure.]' \
    \*{-D+,--system-prop}'[Set system property of the JVM (e.g. -Dmyprop=myvalue).]:system property (prop=val):' \
    '(-i --info -q --quiet)'{-d,--debug}'[Log in debug mode (includes normal stacktrace).]' \
    '(--nodaemon)--daemon[Uses the Gradle daemon to run the build. Starts the daemon if not running.]' \
    '--foreground[Starts the Gradle daemon in the foreground.]' \
    {-g,--gradle-user-home}'[Specifies the gradle user home directory.]:home directory:_directories' \
    '(-)--gui[Launches the Gradle GUI.]' \
    {-I,--init-script}'[Specifies an initialization script.]:init script:_files -g "*.gradle(-.)"' \
    '(-d --debug -q --quiet)'{-i,--info}'[Set log level to info.]' \
    {-m,--dry-run}'[Runs the builds with all task actions disabled.]' \
    '--no-color[Do not use color in the console output.]' \
    '(--daemon)--no-daemon[Do not use the Gradle daemon to run the build.]' \
    '--no-opt[Ignore any task optimization.]' \
    '--offline[The build should operate without accessing network resources.]' \
    \*{-P+,--project-prop}'[Set project property for the build script (e.g. -Pmyprop=myvalue).]:project property (prop=val):' \
    {-p,--project-dir}'[Specifies the start directory for Gradle.]:start directory:_directories' \
    '--parallel[Build projects in parallel. Gradle will attempt to determine the optimal number of executor threads to use.]' \
    '--parallel-threads[Build projects in parallel, using the specified number of executor threads.]' \
    '--profile[Profiles build execution time and generates a report in the <build_dir>/reports/profile directory.]' \
    '--project-cache-dir[Specifies the project-specific cache directory.]:cache directory:_directories' \
    '(-d --debug -i --info)'{-q,--quiet}'[Log errors only.]' \
    '--recompile-scripts[Force build script recompiling.]' \
    '--refresh[Refresh the state of resources of the type(s) specified.]:refresh policy:(dependencies)' \
    '--refresh-dependencies[Refresh the state of dependencies.]' \
    '--rerun-tasks[Ignore previously cached task results.]' \
    '(-S --full-stacktrace)'{-s,--stacktrace}'[Print out the stacktrace for all exceptions.]' \
    '(-s --stacktrace)'{-S,--full-stacktrace}'[Print out the full (very verbose) stacktrace for all exceptions.]' \
    '(-)--stop[Stops the Gradle daemon if it is running.]' \
    {-u,--no-search-upward}"[Don't search in parent folders for a settings.gradle file.]" \
    '(-)'{-v,--version}'[Print version info.]' \
    {-x,--exclude-task}'[Specify a task to be excluded from execution.]:task to exclude:->alltask' \
    '*:task:->task' \
    && ret=0

if [[ $words[CURRENT] != -* ]]; then
    if [[ $gradle_inspect == yes ]]; then
        # If a build file is specified after '-b' or '--build-file', use this file. Otherwise,
        # default is the file 'build.gradle' in the current directory.
        local gradle_buildfile=${${(v)opt_args[(i)-b|--build-file]}:-build.gradle}

        if [[ -f $gradle_buildfile ]]; then
            # Cache name is constructed from the absolute path of the build file.
            local cache_name=${${gradle_buildfile:a}//[^[:alnum:]]/_}
            if _cache_invalid $cache_name || ! _retrieve_cache $cache_name; then
                zle -R "Generating cache from $gradle_buildfile"
                local outputline
                local -a match mbegin mend
                # Run gradle/gradlew and retrieve possible tasks.
                for outputline in ${(f)"$($service --build-file $gradle_buildfile -q tasks --all)"}; do
                    if [[ $outputline == [[:blank:]]#(#b)([[:alnum:]]##)' - '(*) ]]; then
                        # The descriptions of main tasks start at beginning of line, descriptions of
                        # secondary tasks are indented.
                        if [[ $outputline == [[:alnum:]]* ]]; then
                            gradle_group_tasks+=( "$match[1]:$match[2]" )
                        else
                            gradle_all_tasks+=( "$match[1]:$match[2]" )
                        fi
                    fi
                done
                _store_cache $cache_name gradle_group_tasks gradle_all_tasks
            fi

            if [[ $state == task ]]; then
                _tags gradle_group gradle_all
                while _tags; do
                    # Offer main tasks and secondary tasks in different tags.
                    _requested gradle_group && _describe 'group tasks' gradle_group_tasks && ret=0
                    _requested gradle_all && _describe 'secondary tasks' gradle_all_tasks && ret=0
                    (( ret )) || break
                done
            elif [[ $state == alltask ]]; then
                # After '--exclude-task', we don't make a distinction between main tasks and
                # secondary tasks.
                _describe 'all tasks' gradle_group_tasks -- gradle_all_tasks && ret=0
            fi
        fi
    else
        _describe 'built-in tasks' '(
            "dependencies:Displays all dependencies declared in root project."
            "dependencyInsight:Displays the insight into a specific dependency in root project."
            "help:Displays a help message."
            "projects:Displays the sub-projects of root project."
            "properties:Displays the properties of root project."
            "tasks:Displays the tasks runnable from root project."
            )' && ret=0
    fi
fi

return ret