flop

#!/usr/bin/env bash

set -euo pipefail


find_this () {
    THIS="${1:?'must provide script path, like "${BASH_SOURCE[0]}"'}"
    trap "fatal >&2 'FATAL: could not resolve parent directory of ${THIS}'" EXIT
    [ "${THIS:0:1}"  == "/" ] || THIS="$(pwd -P)/${THIS}"
    THIS_DIR="$(dirname -- "${THIS}")"
    THIS_DIR="$(cd -P -- "${THIS_DIR}" && pwd)"
    THIS="${THIS_DIR}/$(basename -- "${THIS}")"
    trap "" EXIT
}


export -f find_this

find_this "${BASH_SOURCE[0]}"


export FLOP_CLI="flop"


. "${THIS_DIR}/flop.d/lib.bash"


main () {
    local USAGE=$(cat <<EOF
USAGE: ${FLOP_CLI} COMMAND [ COMMAND_OPTS ] [ COMMAND_ARGS ]

FilmDrop-on-K8s test utility

Supported commands:
    help (-h, --help)    show this message
    create (mk)          create a new flop cluster
    destroy (rm)         destroy a flop cluster and associated state
    list (ls)            list all known flop clusters
    kubeconfig           get the path to the kubeconfig for a given cluster
    kubectl              run kubectl against a given cluster
    terraform (tf)       run terraform against a given cluster
    test                 run tests against a given cluster
    
All commmands support 'help' for more information.
EOF
    )

    export FLOP_COMMAND="${1:-}"; shift ||:
    case "${FLOP_COMMAND:-}" in
        create|mk)      exec "${FLOP_COMMANDS}/create" "$@" ;;
        destroy|rm)     exec "${FLOP_COMMANDS}/destroy" "$@" ;;
        kubeconfig)     exec "${FLOP_COMMANDS}/kubeconfig" "$@" ;;
        kubectl)        exec "${FLOP_COMMANDS}/kubectl" "$@" ;;
        list|ls)        exec "${FLOP_COMMANDS}/list" "$@" ;;
        terraform|tf)   exec "${FLOP_COMMANDS}/terraform" "$@" ;;
        test)           exec "${FLOP_COMMANDS}/test" "$@" ;;
        help|-h|--help) echo2 "$USAGE"; exit ;;
        ?*) fatal "unknown command: '$FLOP_COMMAND'" 1 ;;
        *)  echo2 "$USAGE"; exit ;;
    esac
}


# check if we have been sourced and exit
# allows us to do testing by sourcing this file
(return 0 2>/dev/null) && return


main "$@"