#!/usr/bin/env bash

redbear_qt_link_sysroot_dir() {
    local sysroot="$1"
    local dir_name="$2"
    if [ -d "${sysroot}/usr/${dir_name}" ] && [ ! -e "${sysroot}/${dir_name}" ]; then
        ln -s "usr/${dir_name}" "${sysroot}/${dir_name}"
    fi
}

redbear_qt_link_sysroot_dirs() {
    local sysroot="$1"
    shift
    local dir_name
    for dir_name in "$@"; do
        redbear_qt_link_sysroot_dir "$sysroot" "$dir_name"
    done
}

redbear_qt_link_plugins_dir() {
    local sysroot="$1"
    if [ -d "${sysroot}/usr/plugins" ] && [ ! -e "${sysroot}/plugins" ]; then
        ln -s "usr/plugins" "${sysroot}/plugins"
    fi
}

redbear_qt_prepare_common_sysroot() {
    local sysroot="$1"
    redbear_qt_link_sysroot_dirs "$sysroot" plugins mkspecs metatypes modules
    redbear_qt_link_plugins_dir "$sysroot"
}

redbear_qt_reset_cmake_cache_dir() {
    rm -f CMakeCache.txt
    if [ -d CMakeFiles ]; then
        python3 - <<'PY'
from pathlib import Path
import os
import shutil

path = Path("CMakeFiles")
for node in path.rglob('*'):
    try:
        os.chmod(node, 0o700)
    except OSError:
        pass
shutil.rmtree(path, ignore_errors=False)
PY
    fi
}

redbear_qt_rewrite_stage_build_paths() {
    local stage_usr="$1"
    local build_dir="$2"
    find "${stage_usr}/lib/cmake" -name '*.cmake' -exec sed -i \
        "s|${build_dir}|/usr|g" {} + 2>/dev/null || true
}

redbear_qt_copy_common_stage_to_sysroot() {
    local stage_usr="$1"
    local sysroot="$2"
    mkdir -p "${sysroot}/include" "${sysroot}/lib"
    cp -a "${stage_usr}/include/"* "${sysroot}/include/" 2>/dev/null || true
    cp -a "${stage_usr}/lib/libQt6"* "${sysroot}/lib/" 2>/dev/null || true
}

redbear_qt_copy_stage_cmake_subdir_to_sysroot() {
    local stage_usr="$1"
    local sysroot="$2"
    local subdir="$3"
    mkdir -p "${sysroot}/lib/cmake/${subdir}"
    cp -a "${stage_usr}/lib/cmake/${subdir}/"* "${sysroot}/lib/cmake/${subdir}/" 2>/dev/null || true
}

redbear_qt_rewrite_stage_include_paths() {
    local stage_cmake_dir="$1"
    local sysroot="$2"
    find "${stage_cmake_dir}" -name '*.cmake' -exec sed -i \
        "s|/usr/include|${sysroot}/include|g" {} + 2>/dev/null || true
}

redbear_qt_rewrite_stage_lib_paths() {
    local stage_cmake_dir="$1"
    local sysroot="$2"
    find "${stage_cmake_dir}" -name '*.cmake' -exec sed -i \
        "s|/usr/lib|${sysroot}/lib|g" {} + 2>/dev/null || true
}

redbear_qt_rewrite_stage_source_metatype_paths() {
    local stage_cmake_dir="$1"
    local sysroot="$2"
    local source_root="$3"
    find "${stage_cmake_dir}" -name '*.cmake' -exec sed -i \
        "s|/usr/src|${source_root}/src|g" {} + 2>/dev/null || true
    find "${stage_cmake_dir}" -name '*.cmake' -exec sed -i \
        "s|${source_root}/src/.*/meta_types/|${sysroot}/metatypes/|g" {} + 2>/dev/null || true
}

redbear_qt_rewrite_usr_src_metatype_paths() {
    local stage_cmake_dir="$1"
    local sysroot="$2"
    find "${stage_cmake_dir}" -name '*.cmake' -exec sed -i \
        "s|/usr/src/.*/meta_types/|${sysroot}/metatypes/|g" {} + 2>/dev/null || true
}

redbear_qt_rewrite_stage_path_literal() {
    local stage_cmake_dir="$1"
    local from_path="$2"
    local to_path="$3"
    find "${stage_cmake_dir}" -name '*.cmake' -exec sed -i \
        "s|${from_path}|${to_path}|g" {} + 2>/dev/null || true
}

redbear_qt_copy_stage_qt6_cmake_to_sysroot() {
    local stage_usr="$1"
    local sysroot="$2"
    mkdir -p "${sysroot}/lib/cmake"
    cp -a "${stage_usr}/lib/cmake/Qt6"* "${sysroot}/lib/cmake/" 2>/dev/null || true
}

redbear_qt_copy_optional_stage_dir_to_sysroot() {
    local stage_usr="$1"
    local sysroot="$2"
    local dir_name="$3"
    if [ -d "${stage_usr}/${dir_name}" ]; then
        mkdir -p "${sysroot}/${dir_name}"
        cp -a "${stage_usr}/${dir_name}/"* "${sysroot}/${dir_name}/" 2>/dev/null || true
    fi
}

redbear_qt_resolve_forwarding_headers() {
    local stage_usr="$1"
    local build_dir="$2"
    find "${stage_usr}/include" -name '*.h' -exec grep -l "${build_dir}" {} \; 2>/dev/null | while read -r fwd_header; do
        local build_path
        build_path=$(grep '#include "' "${fwd_header}" | head -1 | sed 's/#include "\([^"]*\)".*/\1/')
        if [ -n "${build_path}" ] && [ -f "${build_path}" ]; then
            cp "${build_path}" "${fwd_header}"
        fi
    done
}

redbear_qt_ensure_dep_sysroots() {
    local cookbook_root="$1"
    local sysroot="$2"
    local cmake_dir="${sysroot}/usr/lib/cmake"
    [ -d "${cmake_dir}" ] || cmake_dir="${sysroot}/lib/cmake"
    [ -d "${cmake_dir}" ] || return 0
    # Qt cmake macros record absolute sysroot paths during build.  When the
    # cookbook rebuilds a later recipe, the earlier recipe's sysroot may have
    # been cleaned, leaving dangling references.  We recreate each missing
    # directory as a symlink to the dependency's own stage.
    grep -roh "${cookbook_root}/local/recipes/[^ \";]*target/x86_64-unknown-redox/sysroot" "${cmake_dir}" 2>/dev/null | sort -u | while read -r dep_sysroot; do
        local dep_target_dir dep_stage_usr
        dep_target_dir=$(dirname "${dep_sysroot}")
        dep_stage_usr="${dep_target_dir}/stage/usr"
        [ -d "${dep_stage_usr}" ] || continue
        for qt_dir in include lib metatypes plugins mkspecs modules qml; do
            if [ -d "${dep_sysroot}/${qt_dir}" ] && [ ! -L "${dep_sysroot}/${qt_dir}" ]; then
                continue
            fi
            if [ -L "${dep_sysroot}/${qt_dir}" ] || [ -e "${dep_sysroot}/${qt_dir}" ]; then
                rm -f "${dep_sysroot}/${qt_dir}"
            fi
            if [ -d "${dep_stage_usr}/${qt_dir}" ]; then
                mkdir -p "${dep_sysroot}"
                ln -sf "${dep_stage_usr}/${qt_dir}" "${dep_sysroot}/${qt_dir}"
            fi
        done
    done
}