#!/bin/bash

# Standalone _filedir() alternative.
# This exempts from dependence of bash completion routines
function _rally_filedir()
{
    test "${1}" \
        && COMPREPLY=( \
            $(compgen -f -- "${cur}" | grep -E "${1}") \
            $(compgen -o plusdirs -- "${cur}") ) \
        || COMPREPLY=( \
            $(compgen -o plusdirs -f -- "${cur}") \
            $(compgen -d -- "${cur}") )
}

_rally()
{
    declare -A SUBCOMMANDS
    declare -A OPTS

    OPTS["deployment_check"]="--deployment"
    OPTS["deployment_config"]="--deployment"
    OPTS["deployment_create"]="--name --fromenv --filename --no-use"
    OPTS["deployment_destroy"]="--deployment"
    OPTS["deployment_list"]=""
    OPTS["deployment_recreate"]="--deployment"
    OPTS["deployment_show"]="--deployment"
    OPTS["deployment_use"]="--deployment"
    OPTS["info_BenchmarkScenarios"]=""
    OPTS["info_DeploymentEngines"]=""
    OPTS["info_SLA"]=""
    OPTS["info_ServerProviders"]=""
    OPTS["info_find"]="--query"
    OPTS["info_list"]=""
    OPTS["plugin_list"]="--name --namespace"
    OPTS["plugin_show"]="--name --namespace"
    OPTS["show_flavors"]="--deployment"
    OPTS["show_images"]="--deployment"
    OPTS["show_keypairs"]="--deployment"
    OPTS["show_networks"]="--deployment"
    OPTS["show_secgroups"]="--deployment"
    OPTS["task_abort"]="--uuid"
    OPTS["task_delete"]="--force --uuid"
    OPTS["task_detailed"]="--uuid --iterations-data"
    OPTS["task_list"]="--deployment --all-deployments --status --uuids-only"
    OPTS["task_report"]="--tasks --out --open --html --junit"
    OPTS["task_results"]="--uuid"
    OPTS["task_sla_check"]="--uuid --json"
    OPTS["task_start"]="--deployment --task --task-args --task-args-file --tag --no-use --abort-on-sla-failure"
    OPTS["task_status"]="--uuid"
    OPTS["task_use"]="--task"
    OPTS["task_validate"]="--deployment --task --task-args --task-args-file"
    OPTS["verify_compare"]="--uuid-1 --uuid-2 --csv --html --json --output-file --threshold"
    OPTS["verify_detailed"]="--uuid --sort-by"
    OPTS["verify_genconfig"]="--deployment --tempest-config --override"
    OPTS["verify_list"]=""
    OPTS["verify_results"]="--uuid --html --json --output-file"
    OPTS["verify_show"]="--uuid --sort-by --detailed"
    OPTS["verify_start"]="--deployment --set --regex --tempest-config --no-use --system-wide-install"
    OPTS["verify_use"]="--verification"

    for OPT in ${!OPTS[*]} ; do
        CMD=${OPT%%_*}
        CMDSUB=${OPT#*_}
        SUBCOMMANDS[${CMD}]+="${CMDSUB} "
    done

    COMMANDS="${!SUBCOMMANDS[*]}"
    COMPREPLY=()

    local cur="${COMP_WORDS[COMP_CWORD]}"
    local prev="${COMP_WORDS[COMP_CWORD-1]}"

    if [[ $cur =~ ^(\.|\~|\/) ]] || [[ $prev =~ ^--out(|put-file)$ ]] ; then
        _rally_filedir
    elif [[ $prev =~ ^--(task|filename)$ ]] ; then
        _rally_filedir "\.json|\.yaml|\.yml"
    elif [ $COMP_CWORD == "1" ] ; then
        COMPREPLY=($(compgen -W "$COMMANDS" -- ${cur}))
    elif [ $COMP_CWORD == "2" ] ; then
        COMPREPLY=($(compgen -W "${SUBCOMMANDS[${prev}]}" -- ${cur}))
    else
        COMMAND="${COMP_WORDS[1]}_${COMP_WORDS[2]}"
        COMPREPLY=($(compgen -W "${OPTS[$COMMAND]}" -- ${cur}))
    fi
    return 0
}

complete -o filenames -F _rally rally