#!/usr/bin/env bash

_root_dir=$(dirname $(greadlink -f $0))

source "$_root_dir/env.sh"
source "$_root_dir/devutils/set_quilt_vars.sh"

___helium_setup_gn() {
    local OUT_FILE="$_src_dir/out/Default/args.gn"
    cat "$_main_repo/flags.gn" "$_root_dir/flags.macos.gn" > "$OUT_FILE"

    if command -v ccache 2>&1 >/dev/null; then
        echo 'cc_wrapper="env CCACHE_SLOPPINESS=time_macros ccache"' >> "$OUT_FILE"
    else
        echo 'warn: ccache is not available' >&2
    fi

    local TARGET_CPU="x64"
    if [[ $_arch == "arm64" ]]; then
        TARGET_CPU=arm64
    fi

    echo 'target_cpu = "'"$TARGET_CPU"'"' >> "$OUT_FILE"
    echo 'devtools_skip_typecheck = false' >> "$OUT_FILE"

    sed -i '' s/is_official_build/is_component_build/ "$OUT_FILE"
}

___helium_info_pull() {
    "$_root_dir/retrieve_and_unpack_resource.sh" -d -g

    mkdir -p "$_src_dir/out/Default"
    cd "$_src_dir"
}

___helium_info_pull_thirdparty() {
    mkdir -p "$_src_dir/third_party/llvm-build/Release+Asserts"
    mkdir -p "$_src_dir/third_party/rust-toolchain/bin"

    "$_root_dir/retrieve_and_unpack_resource.sh" -p
}

___helium_configure() {
    cd "$_src_dir"
    python3 ./tools/gn/bootstrap/bootstrap.py -o out/Default/gn --skip-generate-buildfiles
    python3 ./tools/rust/build_bindgen.py --rust-target $_rust_target
    ./out/Default/gn gen out/Default --fail-on-unused-args
}

___helium_resources() {
    "$_root_dir/resources/generate_icons.sh"
    python3 "$_main_repo/utils/replace_resources.py" "$_root_dir/resources/platform_resources.txt" "$_root_dir/resources" "$_src_dir"
    python3 "$_main_repo/utils/replace_resources.py" "$_main_repo/resources/helium_resources.txt" "$_main_repo/resources" "$_src_dir"
}

___helium_setup() {
    if [ -d "$_src_dir/out" ]; then
        echo "$_src_dir/out already exists" >&2
        return
    fi

    rm -rf "$_src_dir" && mkdir -p "$_download_cache" "$_src_dir"

    ___helium_info_pull
    python3 "$_main_repo/utils/prune_binaries.py" "$_src_dir" "$_main_repo/pruning.list"
    ___helium_resources
    ___helium_setup_gn
    ___helium_info_pull_thirdparty

    "$_root_dir/devutils/update_patches.sh" merge
    python3 "$_main_repo/utils/helium_version.py" \
        --tree "$_main_repo" \
        --platform-tree "$_root_dir" \
        --chromium-tree "$_src_dir"

    cd "$_src_dir"
    quilt push -a --refresh

    ___helium_configure
}

___helium_reset() {
    "$_root_dir/devutils/update_patches.sh" unmerge || true
    rm "$_subs_cache" || true
    rm "$_namesubs_cache" || true

    (
        mv "$_src_dir" "${_src_dir}x" && \
        rm -rf "${_src_dir}x"
    ) &
}

___helium_name_substitution() {
    if [ "$1" = "nameunsub" ]; then
        python3 "$_main_repo/utils/name_substitution.py" --unsub \
            -t "$_src_dir" --backup-path "$_namesubs_cache"
    elif [ "$1" = "namesub" ]; then
        if [ -f "$_namesubs_cache" ]; then
            echo "$_namesubs_cache exists, are you sure you want to do this?" >&2
            echo "if yes, then delete the $_namesubs_cache file" >&2
            return
        fi

        python3 "$_main_repo/utils/name_substitution.py" --sub \
            -t "$_src_dir" --backup-path "$_namesubs_cache"
    else
        echo "unknown action: $1" >&2
        return
    fi
}

___helium_substitution() {
    if [ "$1" = "unsub" ]; then
        python3 "$_main_repo/utils/domain_substitution.py" revert \
            -c "$_subs_cache" "$_src_dir"

        ___helium_name_substitution nameunsub
    elif [ "$1" = "sub" ]; then
        if [ -f "$_subs_cache" ]; then
            echo "$_subs_cache exists, are you sure you want to do this?" >&2
            echo "if yes, then delete the $_subs_cache file" >&2
            return
        fi

        ___helium_name_substitution namesub

        python3 "$_main_repo/utils/domain_substitution.py" apply \
            -r "$_main_repo/domain_regex.list" \
            -f "$_main_repo/domain_substitution.list" \
            -c "$_subs_cache" \
            "$_src_dir"
    else
        echo "unknown action: $1" >&2
        return
    fi
}

___helium_build() {
    cd "$_src_dir" && ninja -C out/Default chrome chromedriver
}

___helium_run() {
    cd "$_src_dir" && ./out/Default/Helium.app/Contents/MacOS/Helium \
    --user-data-dir="$HOME/Library/Application Support/net.imput.helium.dev" \
    --enable-ui-devtools=$RANDOM
}

___helium_pull() {
    if [ -f "$_subs_cache" ]; then
        echo "source files are substituted, please run 'he unsub' first" >&2
        return 1
    fi

    cd "$_src_dir" && quilt pop -a || true
    "$_root_dir/devutils/update_patches.sh" unmerge || true

    for dir in "$_root_dir" "$_main_repo"; do
        git -C "$dir" stash \
        && git -C "$dir" fetch \
        && git -C "$dir" rebase origin/main \
        && git -C "$dir" stash pop \
        || true
    done

    "$_root_dir/devutils/update_patches.sh" merge
    cd "$_src_dir" && quilt push -a --refresh
}

___helium_patches_merge() {
    "$_root_dir/devutils/update_patches.sh" merge
}

___helium_patches_unmerge() {
    "$_root_dir/devutils/update_patches.sh" unmerge
}

___helium_quilt_push() {
    cd "$_src_dir" && quilt push -a --refresh
}

___helium_quilt_pop() {
    cd "$_src_dir" && quilt pop -a
}

__helium_menu() {
    set -e
    case $1 in
        setup) ___helium_setup;;
        build) ___helium_build;;
        run) ___helium_run;;
        pull) ___helium_pull;;
        sub|unsub) ___helium_substitution "$1";;
        namesub|nameunsub) ___helium_name_substitution "$1";;
        merge) ___helium_patches_merge;;
        unmerge) ___helium_patches_unmerge;;
        push) ___helium_quilt_push;;
        pop) ___helium_quilt_pop;;
        resources) ___helium_resources;;
        reset) ___helium_reset;;
        *)
            echo "usage: he (setup | build | run | sub | unsub | namesub | nameunsub | merge | unmerge | push | pop | pull | reset)" >&2
            echo "\tsetup - sets up the dev environment for the first itme" >&2
            echo "\tbuild - prepares a development build binary" >&2
            echo "\trun - runs a development build of helium with dev data dir & ui devtools enabled" >&2
            echo "\tsub - apply google domain and name substitutions" >&2
            echo "\tunsub - undo google domain substitutions" >&2
            echo "\tnamesub - apply only name substitutions" >&2
            echo "\tnameunsub - undo name substitutions" >&2
            echo "\tmerge - merges all patches" >&2
            echo "\tunmerge - unmerges all patches" >&2
            echo "\tpush - applies all patches" >&2
            echo "\tpop - undoes all patches" >&2
            echo "\tresources - copies helium resources (such as icons)" >&2
            echo "\tpull - undoes all patches, pulls, redoes all patches" >&2
            echo "\treset - nukes everything" >&2
    esac
}

he() {
    (__helium_menu "$@")
}

if ! (return 0 2>/dev/null); then
    printf "usage:\n\t$ source dev.sh\n\t$ he\n" 2>&1
    exit 1
else
    if [ "$__helium_loaded" = "" ]; then
        __helium_loaded=1
        PS1="🎈 $PS1"
    fi
fi