#!/usr/bin/env bash
# -*- coding: utf-8; mode: sh indent-tabs-mode: nil -*-
# SPDX-License-Identifier: AGPL-3.0-or-later

# shellcheck disable=SC2034
main_cmd="$(basename "$0")"

# shellcheck source=utils/lib.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib.sh"

# shellcheck source=utils/lib.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_nvm.sh"

# shellcheck source=utils/lib_sxng_data.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_sxng_data.sh"

# shellcheck source=utils/lib_sxng_weblate.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_sxng_weblate.sh"

# shellcheck source=utils/lib_sxng_static.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_sxng_static.sh"

# shellcheck source=utils/lib_sxng_node.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_sxng_node.sh"

# shellcheck source=utils/lib_sxng_themes.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_sxng_themes.sh"

# shellcheck source=utils/lib_sxng_test.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_sxng_test.sh"

# shellcheck source=utils/lib_go.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_go.sh"

# shellcheck source=utils/lib_redis.sh
source "$(dirname "${BASH_SOURCE[0]}")/utils/lib_redis.sh"

PATH="${REPO_ROOT}/node_modules/.bin:${PATH}"

# config

PYOBJECTS="searx"
PY_SETUP_EXTRAS='[test]'
GECKODRIVER_VERSION="v0.35.0"
# SPHINXOPTS=
BLACK_OPTIONS=("--target-version" "py311" "--line-length" "120" "--skip-string-normalization")
BLACK_TARGETS=("--exclude" "(searx/static|searx/languages.py)" "--include" 'searxng.msg|\.pyi?$' "searx" "searxng_extra" "tests")

_dev_redis_sock="/usr/local/searxng-redis/run/redis.sock"
# set SEARXNG_REDIS_URL if it is not defined and "{_dev_redis_sock}" exists.
if [ -S "${_dev_redis_sock}" ] && [ -z "${SEARXNG_REDIS_URL}" ]; then
    export SEARXNG_REDIS_URL="unix://${_dev_redis_sock}?db=0"
fi

YAMLLINT_FILES=()
while IFS= read -r line; do
    if [ "$line" != "tests/unit/settings/syntaxerror_settings.yml" ]; then
        YAMLLINT_FILES+=("$line")
    fi
done <<< "$(git ls-files './tests/*.yml' './searx/*.yml' './utils/templates/etc/searxng/*.yml' '.github/*.yml' '.github/*/*.yml')"

RST_FILES=(
    'README.rst'
)

help() {
    nvm.help
    cat <<EOF
webapp.:
  run       : run developer instance
docs.:
  html      : build HTML documentation
  live      : autobuild HTML documentation while editing
  gh-pages  : deploy on gh-pages branch
  prebuild  : build reST include files (./${DOCS_BUILD}/includes)
  clean     : clean documentation build
docker.:
  build     : build docker image
  push      : build and push docker image
gecko.driver:
  download & install geckodriver if not already installed (required for
  robot_tests)
redis:
  build     : build redis binaries at $(redis._get_dist)
  install   : create user (${REDIS_USER}) and install systemd service (${REDIS_SERVICE_NAME})
  help      : show more redis commands
py.:
  build     : Build python packages at ./${PYDIST}
  clean     : delete virtualenv and intermediate py files
pyenv.:
  install   : developer install of SearXNG into virtualenv
  uninstall : uninstall developer installation
  cmd ...   : run command ... in virtualenv
  OK        : test if virtualenv is OK
format.:
  python    : format Python code source using black
pygments.:
  less      : build LESS files for pygments
EOF
    go.help
    node.help
    weblate.help
    data.help
    test.help
    themes.help
    static.help
    cat <<EOF
environment ...
  SEARXNG_REDIS_URL : ${SEARXNG_REDIS_URL}
EOF
}


if [ "$VERBOSE" = "1" ]; then
    SPHINX_VERBOSE="-v"
    PYLINT_VERBOSE="-v"
fi

# needed by sphinx-docs
export DOCS_BUILD

webapp.run() {
    local parent_proc="$$"
    (
        if [ "${LIVE_THEME}" ]; then
            ( themes.live "${LIVE_THEME}" )
            kill $parent_proc
        fi
    )&
    (
        sleep 3
        xdg-open http://127.0.0.1:8888/
    )&
    SEARXNG_DEBUG=1 pyenv.cmd python -m searx.webapp
}

docker.push() {
    docker.build push
}

docker.buildx() {
    docker.build buildx
}

# shellcheck disable=SC2119
docker.build() {
    pyenv.install

    local SEARXNG_GIT_VERSION
    local VERSION_GITCOMMIT
    local GITHUB_USER
    local SEARXNG_IMAGE_NAME
    local BUILD

    build_msg DOCKER build
    # run installation in a subprocess and activate pyenv

    # See https://www.shellcheck.net/wiki/SC1001 and others ..
    # shellcheck disable=SC2031,SC2230,SC2002,SC2236,SC2143,SC1001
    (   set -e
        pyenv.activate

        # Check if it is a git repository
        if [ ! -d .git ]; then
	    die 1 "This is not Git repository"
        fi
        if [ ! -x "$(which git)" ]; then
	    die 1 "git is not installed"
        fi

        if ! git remote get-url origin 2> /dev/null; then
	    die 1 "there is no remote origin"
        fi

        # This is a git repository
        git update-index -q --refresh
        python -m searx.version freeze
        eval "$(python -m searx.version)"

        # Get the last git commit id
        VERSION_GITCOMMIT=$(echo "$VERSION_TAG" | cut -d+ -f2)
        build_msg DOCKER "Last commit : $VERSION_GITCOMMIT"

        # define the docker image name
        GITHUB_USER=$(echo "${GIT_URL}" | sed 's/.*github\.com\/\([^\/]*\).*/\1/')
        SEARXNG_IMAGE_NAME="${SEARXNG_IMAGE_NAME:-${GITHUB_USER:-searxng}/searxng}"

        BUILD="build"
        if [ "$1" = "buildx" ]; then
            # buildx includes the push option
            CACHE_TAG="${SEARXNG_IMAGE_NAME}:latest-build-cache"
            BUILD="buildx build --platform linux/amd64,linux/arm64,linux/arm/v7 --push --cache-from=type=registry,ref=$CACHE_TAG --cache-to=type=registry,ref=$CACHE_TAG,mode=max"
            shift
        fi
        build_msg DOCKER "Build command: ${BUILD}"

        # build Docker image
        build_msg DOCKER "Building image ${SEARXNG_IMAGE_NAME}:${SEARXNG_GIT_VERSION}"
        # shellcheck disable=SC2086
        docker $BUILD \
         --build-arg BASE_IMAGE="${DEPENDENCIES_IMAGE_NAME}" \
         --build-arg GIT_URL="${GIT_URL}" \
         --build-arg SEARXNG_DOCKER_TAG="${DOCKER_TAG}" \
         --build-arg SEARXNG_GIT_VERSION="${VERSION_STRING}" \
         --build-arg VERSION_GITCOMMIT="${VERSION_GITCOMMIT}" \
         --build-arg LABEL_DATE="$(date -u +"%Y-%m-%dT%H:%M:%SZ")" \
         --build-arg LABEL_VCS_REF="$(git rev-parse HEAD)" \
         --build-arg LABEL_VCS_URL="${GIT_URL}" \
         --build-arg TIMESTAMP_SETTINGS="$(git log -1 --format="%cd" --date=unix -- searx/settings.yml)" \
         --build-arg TIMESTAMP_UWSGI="$(git log -1 --format="%cd" --date=unix -- dockerfiles/uwsgi.ini)" \
         -t "${SEARXNG_IMAGE_NAME}:latest" -t "${SEARXNG_IMAGE_NAME}:${DOCKER_TAG}" .

        if [ "$1" = "push" ]; then
	        docker push "${SEARXNG_IMAGE_NAME}:latest"
	        docker push "${SEARXNG_IMAGE_NAME}:${DOCKER_TAG}"
	    fi
    )
    dump_return $?
}

# shellcheck disable=SC2119
gecko.driver() {
    pyenv.install

    build_msg INSTALL "gecko.driver"
    # run installation in a subprocess and activate pyenv
    (   set -e
        pyenv.activate

        INSTALLED_VERSION=$(geckodriver -V 2> /dev/null | head -1 | awk '{ print "v" $2}') || INSTALLED_VERSION=""
        set +e
        if [ "${INSTALLED_VERSION}" = "${GECKODRIVER_VERSION}" ]; then
            build_msg INSTALL "geckodriver already installed"
            return
        fi
        PLATFORM="$(python -c 'import platform; print(platform.system().lower(), platform.architecture()[0])')"
        case "$PLATFORM" in
            "linux 32bit" | "linux2 32bit") ARCH="linux32";;
            "linux 64bit" | "linux2 64bit") ARCH="linux64";;
            "windows 32 bit") ARCH="win32";;
            "windows 64 bit") ARCH="win64";;
            "mac 64bit") ARCH="macos";;
        esac
        GECKODRIVER_URL="https://github.com/mozilla/geckodriver/releases/download/$GECKODRIVER_VERSION/geckodriver-$GECKODRIVER_VERSION-$ARCH.tar.gz";

        build_msg GECKO "Installing ${PY_ENV_BIN}/geckodriver from $GECKODRIVER_URL"

        FILE="$(mktemp)"
        wget -qO "$FILE" -- "$GECKODRIVER_URL" && tar xz -C "${PY_ENV_BIN}" -f "$FILE" geckodriver
        rm -- "$FILE"
        chmod 755 -- "${PY_ENV_BIN}/geckodriver"
    )
    dump_return $?
}

pygments.less() {
    build_msg PYGMENTS "searxng_extra/update/update_pygments.py"
    if ! pyenv.cmd python searxng_extra/update/update_pygments.py; then
        build_msg PYGMENTS "building LESS files for pygments failed"
        return 1
    fi
    return 0
}

py.build() {
    build_msg BUILD "python package ${PYDIST}"
    pyenv.cmd python setup.py \
              sdist -d "${PYDIST}" \
              bdist_wheel --bdist-dir "${PYBUILD}" -d "${PYDIST}"
}

py.clean() {
    build_msg CLEAN pyenv
    (   set -e
        pyenv.drop
        [ "$VERBOSE" = "1" ] && set -x
        rm -rf "${PYDIST}" "${PYBUILD}" "${PY_ENV}" ./.tox ./*.egg-info
        find . -name '*.pyc' -exec rm -f {} +
        find . -name '*.pyo' -exec rm -f {} +
        find . -name __pycache__ -exec rm -rf {} +
    )
}

pyenv.check() {
    cat  <<EOF
import yaml
print('import yaml --> OK')
EOF
}

pyenv.install() {

    if ! pyenv.OK; then
        py.clean > /dev/null
    fi
    if pyenv.install.OK > /dev/null; then
        return 0
    fi

    (   set -e
        pyenv
        build_msg PYENV "[install] pip install --use-pep517 --no-build-isolation -e 'searx${PY_SETUP_EXTRAS}'"
        "${PY_ENV_BIN}/python" -m pip install --use-pep517 --no-build-isolation -e ".${PY_SETUP_EXTRAS}"
    )
    local exit_val=$?
    if [ ! $exit_val -eq 0 ]; then
        die 42 "error while pip install (${PY_ENV_BIN})"
    fi
}

pyenv.uninstall() {
    build_msg PYENV "[pyenv.uninstall] uninstall packages: ${PYOBJECTS}"
    pyenv.cmd python setup.py develop --uninstall 2>&1 \
        | prefix_stdout "${_Blue}PYENV     ${_creset}[pyenv.uninstall] "

}

format.python() {
    build_msg TEST "[format.python] black \$BLACK_TARGETS"
    pyenv.cmd black "${BLACK_OPTIONS[@]}" "${BLACK_TARGETS[@]}"
    dump_return $?
}

# shellcheck disable=SC2119
main() {

    local _type
    local cmd="$1"; shift

    if [ "$cmd" == "" ]; then
        help
        err_msg "missing command"
        return 42
    fi

    case "$cmd" in
        --getenv) var="$1"; echo "${!var}";;
        --help) help;;
        --*)
            help
            err_msg "unknown option $cmd"
            return 42
            ;;
        *)
            _type="$(type -t "$cmd")"
            if [ "$_type" != 'function' ]; then
                err_msg "unknown command: $cmd / use --help"
                return 42
            else
                "$cmd" "$@"
            fi
            ;;
    esac
}

main "$@"