#!/bin/bash

CURDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"

function assert_ret_zero() {
    if [ "$1" -ne 0 ]; then
        if [ ! -z "$2" ]; then
            echo "$2"
        fi
        exit 1
    fi
}

function check_submodules() {
    if git submodule status | grep -qE '^\-'; then
        kodev-fetch-thirdparty
    fi
}

function setup_env() {
    files=$(ls -d ./koreader-emulator-*/koreader)
    assert_ret_zero $? "Emulator not found, please build it first."
    export EMU_DIR=${files[0]}
}

function kodev-fetch-thirdparty() {
    make fetchthirdparty
}

SUPPORTED_TARGETS="
    kindle          For kindle with touch support
    kindle5         For kindle models >= kindle5 < paper white 2
    kindlepw2       For kindle models >= paper white 2
    kindle-legacy   For kindle2/3/4/DXG
    kobo
    android
    pocketbook
    ubuntu-touch
    emu             (*default) If no TARGET is given, assume emulator
    win32
"

function kodev-build() {
    BUILD_HELP_MSG="
usage: build <OPTIONS> <TARGET>

OPTIONS:

    -v, --verbose   Build in verbose mode.

TARGET:
${SUPPORTED_TARGETS}"

    while [[ $1 == '-'* ]]; do
        PARAM=$(echo "$1" | awk -F= '{print $1}')
        VALUE=$(echo "$1" | awk -F= '{print $2}')
        case $PARAM in
            -v | --verbose)
                export VERBOSE=1
                ;;
            -h | --help)
                echo "${BUILD_HELP_MSG}"
                exit 0
                ;;
            *)
                echo "ERROR: unknown option \"$PARAM\""
                echo "${BUILD_HELP_MSG}"
                exit 1
                ;;
        esac
        shift 1
    done

    check_submodules
    case $1 in
        kindle)
            make TARGET=kindle
            assert_ret_zero $?
            ;;
        kindle5)
            make TARGET=kindle5
            assert_ret_zero $?
            ;;
        kindlepw2)
            make TARGET=kindlepw2
            assert_ret_zero $?
            ;;
        kobo)
            make TARGET=kobo
            assert_ret_zero $?
            ;;
        kindle-legacy)
            make TARGET=kindle-legacy
            assert_ret_zero $?
            ;;
        android)
            [[ -n ${NDK+x} ]] || export NDK="${CURDIR}/base/toolchain/android-ndk-r12b"
            [ -e "${CURDIR}/base/toolchain/android-toolchain/bin/arm-linux-androideabi-gcc" ] || {
                { [ -e "${NDK}" ] || make -C "${CURDIR}/base/toolchain" android-ndk; }
                make android-toolchain
                assert_ret_zero $?
            }
            echo "Using NDK: ${NDK}..."
            make TARGET=android
            assert_ret_zero $?
            ;;
        pocketbook)
            if [ ! -d "${CURDIR}/base/toolchain/pocketbook-toolchain" ]; then
                make pocketbook-toolchain
                assert_ret_zero $?
            fi
            make TARGET=pocketbook
            assert_ret_zero $?
            ;;
        ubuntu-touch)
            make TARGET=ubuntu-touch
            assert_ret_zero $?
            ;;
        win32)
            make TARGET=win32
            assert_ret_zero $?
            ;;
        *)
            make
            assert_ret_zero $? "Failed to build emulator! Try run with -v for more information."
            setup_env
            ;;
    esac
}

function kodev-clean() {
    CLEAN_HELP_MSG="
usage: clean <TARGET>

TARGET:
${SUPPORTED_TARGETS}"

    case $1 in
        -h | --help)
            echo "${CLEAN_HELP_MSG}"
            exit 0
            ;;
        kindle)
            make TARGET=kindle clean
            ;;
        kindle5)
            make TARGET=kindle5 clean
            ;;
        kindlepw2)
            make TARGET=kindlepw2 clean
            ;;
        kobo)
            make TARGET=kobo clean
            ;;
        kindle-legacy)
            make TARGET=kindle-legacy clean
            ;;
        android)
            make TARGET=android clean
            rm -f ./*.apk
            ;;
        pocketbook)
            make TARGET=pocketbook clean
            ;;
        ubuntu-touch)
            make TARGET=ubuntu-touch clean
            ;;
        win32)
            make TARGET=win32 clean
            ;;
        *)
            make clean
            ;;
    esac
}

function kodev-release() {
    # SUPPORTED_RELEASE_TARGETS=$(echo ${SUPPORTED_TARGETS} | sed 's/win32//')
    SUPPORTED_RELEASE_TARGETS="${SUPPORTED_TARGETS/emu*/""}"
    RELEASE_HELP_MSG="
usage: release <TARGET>

TARGET:
${SUPPORTED_RELEASE_TARGETS}"
    [ $# -lt 1 ] && {
        echo "${RELEASE_HELP_MSG}"
        exit 1
    }

    while [[ $1 == '-'* ]]; do
        PARAM=$(echo "$1" | awk -F= '{print $1}')
        VALUE=$(echo "$1" | awk -F= '{print $2}')
        case $PARAM in
            -v | --verbose)
                export VERBOSE=1
                ;;
            -h | --help)
                echo "${RELEASE_HELP_MSG}"
                exit 0
                ;;
            *)
                echo "ERROR: unknown option \"$PARAM\""
                echo "${RELEASE_HELP_MSG}"
                exit 1
                ;;
        esac
        shift 1
    done

    which tx>/dev/null && make po || echo "WARN: Transifex client not found, no translation pulled."

    case $1 in
        kindle)
            kodev-build kindle
            make TARGET=kindle update
            ;;
        kindle5)
            kodev-build kindle5
            make TARGET=kindle5 update
            ;;
        kindlepw2)
            kodev-build kindlepw2
            make TARGET=kindlepw2 update
            ;;
        kobo)
            kodev-build kobo
            make TARGET=kobo update
            ;;
        kindle-legacy)
            kodev-build kindle-legacy
            make TARGET=kindle-legacy update
            ;;
        android)
            kodev-build android
            export PATH=$PATH:${CURDIR}/base/toolchain/android-sdk-linux/tools
            which android &>/dev/null || {
                make -C "${CURDIR}/base/toolchain" android-sdk
            }
            ANDROID_HOME=$(dirname "$(dirname "$(which android)")")
            export ANDROID_HOME
            export PATH=$PATH:${NDK}
            make TARGET=android update
            ;;
        pocketbook)
            kodev-build pocketbook
            make TARGET=pocketbook update
            ;;
        ubuntu-touch)
            kodev-build pocketbook
            make TARGET=ubuntu-touch update
            ;;
        *)
            echo "Unsupported target for release: $1."
            echo "${RELEASE_HELP_MSG}"
            exit 1
            ;;
    esac
}

function kodev-wbuilder() {
    kodev-build
    echo "[*] Running wbuilder.lua..."
    pushd "${EMU_DIR}" && {
        EMULATE_READER_W=540 EMULATE_READER_H=720 ./luajit ./tools/wbuilder.lua
    } || exit
    popd
}

function kodev-run() {
    RUN_HELP_MSG="
usage: run <OPTIONS> <ARGS>

OPTIONS:

    -h=X, --screen-height=X  set height of the emulator screen (default: 720)
    -w=X, --screen-width=X   set width of the emulator screen (default: 540)
    --no-build               run reader without rebuilding
    --disable-touch          use this if you want to simulate keyboard only devices
    -s=FOO --simulate=FOO    simulate dimension and other specs for a given device model
                             supported model: kobo-aura-one, kindle3
    "
    screen_width=540
    screen_height=720
    while [[ $1 == '-'* ]]; do
        PARAM=$(echo "$1" | awk -F= '{print $1}')
        VALUE=$(echo "$1" | awk -F= '{print $2}')
        case $PARAM in
            --disable-touch)
                export DISABLE_TOUCH=1
                ;;
            --no-build)
                no_build=true
                ;;
            -w | --screen-width)
                screen_width=${VALUE}
                ;;
            -h | --screen-height)
                screen_height=${VALUE}
                ;;
            -s | --simulate)
                device_model=${VALUE}
                case ${device_model} in
                    kindle3)
                        screen_width=600
                        screen_height=800
                        ;;
                    kobo-aura-one)
                        screen_width=1404
                        screen_height=1872
                        ;;
                    *)
                        echo "ERROR: spec unknown for ${device_model}."
                        ;;
                esac
                ;;
            -h | --help)
                echo "${RUN_HELP_MSG}"
                exit 0
                ;;
            *)
                echo "ERROR: unknown option \"$PARAM\""
                echo "${RUN_HELP_MSG}"
                exit 1
                ;;
        esac
        shift
    done

    if [ ! ${no_build} ]; then
        echo "[*] Building KOReader..."
        kodev-build
    else
        setup_env
    fi

    if [ ! -d "${EMU_DIR}" ]; then
        echo "Failed to find emulator directory! Please try build command first."
        exit 1
    fi

    echo "[*] Running KOReader with arguments: $*..."
    pushd "${EMU_DIR}" && {
        if [ $# -lt 1 ]; then
            args=${CURDIR}/test
        else
            args="$*"
            [[ $args != /* ]] && args="${CURDIR}/${args}"
        fi

        EMULATE_READER_W=${screen_width} EMULATE_READER_H=${screen_height} \
            ./reader.lua -d "$args"
    } || exit
    popd
}

function kodev-test() {
    TEST_HELP_MSG="
usage: test <OPTIONS> [front|base] <TEST_NAME>

    TEST_NAME is optional. If no TEST_NAME is given, all tests will be run.

OPTIONS:

    --tags=TAGS     only run tests with given tags
    "
    while [[ $1 == '-'* ]]; do
        PARAM=$(echo "$1" | awk -F= '{print $1}')
        VALUE=$(echo "$1" | awk -F= '{print $2}')
        case $PARAM in
            --tags)
                opts="--tags=${VALUE}"
                ;;
            -h | --help)
                echo "${TEST_HELP_MSG}"
                exit 0
                ;;
            *)
                echo "ERROR: unknown option \"$PARAM\""
                echo "${TEST_HELP_MSG}"
                exit 1
                ;;
        esac
        shift
    done

    [ $# -lt 1 ] && {
        echo "${TEST_HELP_MSG}"
        exit 1
    }
    [[ $1 != "front" && $1 != "base" ]] && {
        echo "Invalid test suite: $1!"
        echo "${TEST_HELP_MSG}"
        exit 1
    }

    check_submodules && make
    setup_env
    make "${EMU_DIR}/.busted"
    pushd "${EMU_DIR}" && {
        test_path="./spec/$1/unit"

        if [ ! -z "$2" ]; then
            test_path="${test_path}/$2"
        fi

        echo "Running tests in" "${test_path}"
        busted --lua="./luajit" "${opts}" \
            --no-auto-insulate \
            --lazy \
            -o "./spec/$1/unit/verbose_print" \
            --exclude-tags=notest "${test_path}"
    } || exit
    popd
}

function kodev-cov() {
    COV_HELP_MSG="
usage: cov <OPTIONS>

OPTIONS:

    --show-previous     show coverage stats from previous run
    --full              show full coverage report (down to each line)
    "
    show_full=0
    show_previous=0
    while [[ $1 == '-'* ]]; do
        PARAM=$(echo "$1" | awk -F= '{print $1}')
        VALUE=$(echo "$1" | awk -F= '{print $2}')
        case $PARAM in
            --full)
                show_full=1
                ;;
            --show-previous)
                show_previous=1
                ;;
            -h | --help)
                echo "${COV_HELP_MSG}"
                exit 0
                ;;
            *)
                echo "ERROR: unknown option \"$PARAM\""
                echo "${COV_HELP_MSG}"
                exit 1
                ;;
        esac
        shift
    done

    check_submodules && make
    setup_env
    make "${EMU_DIR}/.busted"
    pushd "${EMU_DIR}" && {
        target=front
        test_path="./spec/${target}/unit"
        if [ ${show_previous} -eq 0 ]; then
            echo "Running tests in" ${test_path}
            busted --lua="./luajit" \
                --sort-files \
                --no-auto-insulate \
                --lazy \
                -o "./spec/${target}/unit/verbose_print" \
                --coverage \
                --exclude-tags=nocov "${test_path}" || {
                echo "Failed to run tests!" && exit 1
            }
        fi
        if [ ${show_full} -eq 1 ]; then
            cat luacov.report.out
        else
            tail -n \
                +$(($(grep -nm1 -e '^Summary$' luacov.report.out | cut -d: -f1) - 1)) \
                luacov.report.out
        fi
    } || exit
    popd
}

function kodev-log() {
    LOG_HELP_MSG="
usage: log <TARGET>

TARGET:

    android
"
    [ $# -lt 1 ] && {
        echo "${LOG_HELP_MSG}"
        exit 1
    }

    case $1 in
        -h | --help)
            echo "${LOG_HELP_MSG}"
            exit 0
            ;;
        android)
            adb logcat 'luajit-launcher:D KOReader:D *:S'
            ;;
        *)
            echo "Unsupported target: $1."
            echo "${LOG_HELP_MSG}"
            exit 1
            ;;
    esac
}

HELP_MSG="
usage: $0 COMMAND <ARGS>

Supported commands:

    activate            Bootstrap shell environment for kodev
    build               Build KOReader
    clean               Clean KOReader build
    fetch-thirdparty    Fetch thirdparty dependencies for build
    log                 Tail log stream for a running KOReader app
    release             Build KOReader release package
    run                 Run KOReader
    test                Run tests
    wbuilder            Run wbuilder.lua script (useful for building new UI widget)
"
[ $# -lt 1 ] && {
    echo "Missing command."
    echo "${HELP_MSG}"
    exit 1
}

case $1 in
    activate)
        echo "adding ${CURDIR} to \$PATH..."
        export PATH="${PATH}:${CURDIR}"
        eval "$(luarocks path --bin)"
        exec "${SHELL}"
        ;;
    fetch-thirdparty)
        kodev-fetch-thirdparty
        ;;
    clean)
        shift 1
        kodev-clean "$@"
        ;;
    build)
        shift 1
        kodev-build "$@"
        ;;
    release)
        shift 1
        kodev-release "$@"
        ;;
    wbuilder)
        kodev-wbuilder
        ;;
    run)
        shift 1
        kodev-run "$@"
        ;;
    test)
        shift 1
        kodev-test "$@"
        ;;
    cov)
        shift 1
        kodev-cov "$@"
        ;;
    prompt)
        kodev-build
        pushd "${EMU_DIR}" && {
            ./luajit -i setupkoenv.lua
        } || exit
        popd
        ;;
    log)
        shift 1
        kodev-log "$@"
        ;;
    --help | -h)
        echo "${HELP_MSG}"
        exit 0
        ;;
    *)
        echo "Unknown command: $1."
        echo "${HELP_MSG}"
        exit 1
        ;;
esac