#!/bin/bash

# exit on errors
set -e

# import our ENV variables
# catch exits and give a friendly error message
function showerr {
    echo "Failed to load configuration! You may need to update your .env and quote values with special characters in them."
}
trap showerr EXIT
source .env
trap - EXIT

# show commands as they're executed
set -x
function runweb {
    docker-compose run --rm web "$@"
}

function execdb {
    docker-compose exec db $@
}

function execweb {
    docker-compose exec web "$@"
}

function initdb {
    execweb python manage.py migrate
    execweb python manage.py initdb
}

function awscommand {
    # expose env vars
    export AWS_ACCESS_KEY_ID=${AWS_ACCESS_KEY_ID}
    export AWS_SECRET_ACCESS_KEY=${AWS_SECRET_ACCESS_KEY}
    export AWS_DEFAULT_REGION=${AWS_S3_REGION_NAME}
    # first arg is mountpoint, second is the whole aws command
    docker run --rm -it -v $1\
        -e AWS_ACCESS_KEY_ID -e AWS_SECRET_ACCESS_KEY -e AWS_DEFAULT_REGION\
        amazon/aws-cli $2
}

CMD=$1
if [ -n "$CMD" ]; then
    shift
fi

# show commands as they're executed
set -x

case "$CMD" in
    up)
        docker-compose up --build "$@"
        ;;
    run)
        docker-compose run --rm --service-ports web
        ;;
    initdb)
        initdb
        ;;
    migrate)
        runweb python manage.py migrate "$@"
        ;;
    bash)
        runweb bash
        ;;
    shell)
        runweb python manage.py shell
        ;;
    dbshell)
        execdb psql -U ${POSTGRES_USER} ${POSTGRES_DB}
        ;;
    restart_celery)
        docker-compose restart celery_worker
        ;;
    collectstatic)
        runweb python manage.py collectstatic --no-input
        ;;
    build)
        docker-compose build
        ;;
    update)
        git pull
        docker-compose build --no-cache
        docker-compose exec web python manage.py migrate
        docker-compose exec web python manage.py collectstatic --no-input
        docker-compose restart
        ;;
    populate_streams)
        runweb python manage.py populate_streams $@
        ;;
    populate_suggestions)
        runweb python manage.py populate_suggestions
        ;;
    generate_thumbnails)
        runweb python manage.py generateimages
        ;;
    generate_preview_images)
        runweb python manage.py generate_preview_images $@
        ;;
    copy_media_to_s3)
        awscommand "bookwyrm_media_volume:/images"\
            "s3 cp /images s3://${AWS_STORAGE_BUCKET_NAME}/images\
            --endpoint-url ${AWS_S3_ENDPOINT_URL}\
            --recursive --acl public-read"
        ;;
    set_cors_to_s3)
        awscommand "$(pwd):/bw"\
            "s3api put-bucket-cors\
            --bucket ${AWS_STORAGE_BUCKET_NAME}\
            --endpoint-url ${AWS_S3_ENDPOINT_URL}\
            --cors-configuration file:///bw/$@"
        ;;
    runweb)
        runweb "$@"
        ;;
    rundb)
        rundb "$@"
        ;;
    *)
        set +x # No need to echo echo
        echo "Unrecognised command. Try:"
        echo "    up [container]"
        echo "    run"
        echo "    initdb"
        echo "    makemigrations [migration]"
        echo "    migrate [migration]"
        echo "    bash"
        echo "    shell"
        echo "    dbshell"
        echo "    restart_celery"
        echo "    collectstatic"
        echo "    build"
        echo "    clean"
        echo "    populate_streams [--stream=<stream name>]"
        echo "    populate_suggestions"
        echo "    generate_thumbnails"
        echo "    generate_preview_images [--all]"
        echo "    copy_media_to_s3"
        echo "    set_cors_to_s3 [cors file]"
        echo "    runweb [command]"
        echo "    rundb [command]"
        ;;
esac