#!/usr/bin/env bash
# ============================================================================
# Gemeinsame Funktionen fuer make_installer_*.sh
# ============================================================================

set -euo pipefail

# Verzeichnisse
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
SOURCE_DIR="$(cd "${SCRIPT_DIR}/.." && pwd)"
EXCLUDE_FILE="${SCRIPT_DIR}/exclude_patterns.txt"
INSTALLER_DIR="${SCRIPT_DIR}/installer"
BUILD_CONF="${SCRIPT_DIR}/build.conf"
BUILD_LOG="${SCRIPT_DIR}/build.log"

# --- build.conf laden ---
load_build_conf() {
    # Defaults
    INCLUDE_AUDIO_ASSETS=true
    INCLUDE_MUSIC_ASSETS=false
    INCLUDE_MORPHER_ASSETS=true
    INCLUDE_WAKEWORD_MODELS=true
    INCLUDE_PIPER_MODELS=true  # models/piper/*.onnx (inkl. Custom-Voices)
    INCLUDE_SYMSPELL=true
    INCLUDE_LLM_MODELS=false
    INCLUDE_PLUGIN_MODELS=false
    INCLUDE_TRAINER_SOURCE=true
    INCLUDE_TRAINING_DATA=false
    INCLUDE_DOCS=true
    INCLUDE_BASH_SCRIPTS=true

    if [[ -f "${BUILD_CONF}" ]]; then
        # Nur KEY=value Zeilen laden (keine Kommentare, keine leeren Zeilen)
        while IFS='=' read -r key value; do
            key=$(echo "${key}" | xargs)  # Whitespace trimmen
            value=$(echo "${value}" | xargs)
            [[ -z "${key}" || "${key}" == \#* ]] && continue
            declare -g "${key}=${value}"
        done < "${BUILD_CONF}"
        echo "  build.conf geladen"
    else
        echo "  WARNUNG: ${BUILD_CONF} nicht gefunden — verwende Defaults"
    fi
}

# --- Dynamische Excludes aus build.conf generieren ---
build_conf_excludes() {
    local mode="$1"
    local excludes=""

    # Assets
    if [[ "${INCLUDE_AUDIO_ASSETS}" != "true" ]]; then
        excludes+=" assets/default/audio"
    fi
    if [[ "${INCLUDE_MUSIC_ASSETS}" != "true" ]]; then
        excludes+=" assets/default/music"
    fi
    if [[ "${INCLUDE_MORPHER_ASSETS}" != "true" ]]; then
        excludes+=" assets/default/audio_morpher"
    fi

    # Modelle
    if [[ "${INCLUDE_WAKEWORD_MODELS}" != "true" ]]; then
        excludes+=" models/wakeword/*/*.onnx"
    fi
    if [[ "${INCLUDE_PIPER_MODELS}" != "true" ]]; then
        excludes+=" models/piper/*.onnx models/piper/.cache"
    fi
    if [[ "${INCLUDE_SYMSPELL}" != "true" ]]; then
        excludes+=" models/symspell"
    fi
    if [[ "${INCLUDE_LLM_MODELS}" != "true" ]]; then
        excludes+=" models/nlp/*.gguf"
    fi
    if [[ "${INCLUDE_PLUGIN_MODELS}" != "true" ]]; then
        # Alle Plugin-Models ausschliessen
        # Piper-Voices werden ueber models/piper/ (INCLUDE_PIPER_MODELS) behalten
        excludes+=" plugins/*/models"
    fi

    # Trainer
    if [[ "${INCLUDE_TRAINER_SOURCE}" != "true" ]]; then
        excludes+=" trainer"
    fi
    if [[ "${INCLUDE_TRAINING_DATA}" != "true" ]]; then
        excludes+=" trainer/data/raw trainer/data/processed trainer/assets trainer/cache trainer/processed"
    fi

    # Sonstiges
    if [[ "${INCLUDE_DOCS}" != "true" ]]; then
        excludes+=" docs"
    fi
    if [[ "${INCLUDE_BASH_SCRIPTS}" != "true" ]]; then
        excludes+=" bash"
    fi

    echo "${excludes}"
}

# --- Version aus trixy_core/utils/version.py parsen ---
parse_version() {
    local version_file="${SOURCE_DIR}/trixy_core/utils/version.py"

    if [[ ! -f "${version_file}" ]]; then
        echo "FEHLER: ${version_file} nicht gefunden" >&2
        exit 1
    fi

    local major minor revision
    major=$(grep -E '^MAJOR:\s*int\s*=' "${version_file}" | grep -oE '[0-9]+')
    minor=$(grep -E '^MINOR:\s*int\s*=' "${version_file}" | grep -oE '[0-9]+')
    revision=$(grep -E '^REVISION:\s*int\s*=' "${version_file}" | grep -oE '[0-9]+')

    echo "${major}.${minor}.${revision}"
}

# --- Git-Revision ermitteln (Kurz-Hash, oder "nogit") ---
get_git_revision() {
    if command -v git >/dev/null 2>&1 && git -C "${SOURCE_DIR}" rev-parse --git-dir >/dev/null 2>&1; then
        git -C "${SOURCE_DIR}" rev-parse --short HEAD 2>/dev/null || echo "nogit"
    else
        echo "nogit"
    fi
}

# --- Git-Status pruefen: "clean" oder "dirty" ---
get_git_status() {
    if command -v git >/dev/null 2>&1 && git -C "${SOURCE_DIR}" rev-parse --git-dir >/dev/null 2>&1; then
        # Cache- und Runtime-Dateien ignorieren bei der Pruefung
        local changes
        changes=$(git -C "${SOURCE_DIR}" status --porcelain 2>/dev/null \
            | grep -v '__pycache__' \
            | grep -v '\.pyc$' \
            | grep -v '^\s*M logs/' \
            | grep -v '^\s*M data/activity/' \
            | grep -v '^\s*M cron/' \
            || true)
        if [[ -z "${changes}" ]]; then
            echo "clean"
        else
            echo "dirty"
        fi
    else
        echo "nogit"
    fi
}

# --- Naechste Build-Nummer ermitteln ---
# Wenn der aktuelle Commit-Hash bereits in der build.log steht, wird dieselbe
# Build-Nummer zurueckgegeben. Sonst wird max(build_number) + 1 verwendet.
get_next_build_number() {
    local git_rev="$1"

    if [[ ! -f "${BUILD_LOG}" ]]; then
        echo "1"
        return
    fi

    # Suche existierenden Eintrag mit gleichem git_rev (Spalte 4)
    local existing
    existing=$(awk -F',' -v rev="${git_rev}" '
        NR > 1 && $4 == rev { print $1; exit }
    ' "${BUILD_LOG}")

    if [[ -n "${existing}" ]]; then
        echo "${existing}"
        return
    fi

    # Neue Build-Nummer = max + 1
    local max_build
    max_build=$(awk -F',' '
        NR > 1 && $1 ~ /^[0-9]+$/ { if ($1 > m) m = $1 }
        END { print m + 0 }
    ' "${BUILD_LOG}")

    echo "$((max_build + 1))"
}

# --- build.log Eintrag hinzufuegen/aktualisieren ---
# Spalten: build_number,version,full_version,git_rev,git_status,timestamp,modes
#
# Wenn git_rev bereits existiert, wird der Modus zur modes-Spalte hinzugefuegt
# (falls noch nicht vorhanden) und timestamp aktualisiert.
update_build_log() {
    local build_number="$1"
    local version="$2"
    local full_version="$3"
    local git_rev="$4"
    local git_status="$5"
    local mode="$6"
    local timestamp
    timestamp=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

    # Header erstellen wenn Datei neu
    if [[ ! -f "${BUILD_LOG}" ]]; then
        echo "build_number,version,full_version,git_rev,git_status,timestamp,modes" > "${BUILD_LOG}"
    fi

    # Existierenden Eintrag suchen
    if grep -q "^${build_number}," "${BUILD_LOG}" 2>/dev/null; then
        # Eintrag aktualisieren: modes ergaenzen, timestamp updaten
        local tmp
        tmp=$(mktemp)
        awk -F',' -v bn="${build_number}" -v mode="${mode}" -v ts="${timestamp}" -v gs="${git_status}" '
            BEGIN { OFS = "," }
            NR == 1 { print; next }
            $1 == bn {
                # Modes zusammenfuehren (ohne Duplikate)
                n = split($7, arr, "|")
                found = 0
                for (i = 1; i <= n; i++) if (arr[i] == mode) found = 1
                if (!found) {
                    if ($7 == "") $7 = mode
                    else $7 = $7 "|" mode
                }
                $5 = gs       # status aktualisieren
                $6 = ts       # timestamp aktualisieren
                print
                next
            }
            { print }
        ' "${BUILD_LOG}" > "${tmp}"
        mv "${tmp}" "${BUILD_LOG}"
    else
        # Neuer Eintrag
        echo "${build_number},${version},${full_version},${git_rev},${git_status},${timestamp},${mode}" >> "${BUILD_LOG}"
    fi
}

# --- VERSION-Datei fuer den Build generieren ---
# Wird ins Release-Verzeichnis geschrieben UND ins Source-Tar aufgenommen.
generate_version_file() {
    local target_path="$1"
    local mode="$2"
    local version="$3"
    local build_number="$4"
    local full_version="$5"
    local git_rev="$6"
    local git_status="$7"
    local timestamp
    timestamp=$(date -u +"%Y-%m-%dT%H:%M:%SZ")

    cat > "${target_path}" << EOF
Name:         Trixy
Mode:         ${mode}
Version:      ${version}
Build:        ${build_number}
FullVersion:  ${full_version}
GitRevision:  ${git_rev}
GitStatus:    ${git_status}
BuildDate:    ${timestamp}
EOF
}

# --- Build-Info sammeln und ausgeben ---
# Setzt globale Variablen: BUILD_VERSION, BUILD_NUMBER, BUILD_FULL_VERSION,
#                          BUILD_GIT_REV, BUILD_GIT_STATUS
collect_build_info() {
    BUILD_VERSION=$(parse_version)
    BUILD_GIT_REV=$(get_git_revision)
    BUILD_GIT_STATUS=$(get_git_status)
    BUILD_NUMBER=$(get_next_build_number "${BUILD_GIT_REV}")
    BUILD_FULL_VERSION="${BUILD_VERSION}.${BUILD_NUMBER}"

    echo "  Version:      ${BUILD_VERSION}"
    echo "  Build:        ${BUILD_NUMBER}"
    echo "  FullVersion:  ${BUILD_FULL_VERSION}"
    echo "  Git-Revision: ${BUILD_GIT_REV} (${BUILD_GIT_STATUS})"
}

# --- Release-Verzeichnis erstellen ---
prepare_release_dir() {
    local version="$1"
    local mode="$2"
    local release_dir="${SCRIPT_DIR}/Release/trixy-${mode}-${version}"

    mkdir -p "${release_dir}"
    echo "${release_dir}"
}

# --- build.conf Einstellungen anzeigen ---
print_build_conf() {
    local mode="$1"
    echo "  Build-Konfiguration:"
    echo "    Audio-Assets:      ${INCLUDE_AUDIO_ASSETS}"
    echo "    Musik-Assets:      ${INCLUDE_MUSIC_ASSETS}"
    echo "    Morpher-Assets:    ${INCLUDE_MORPHER_ASSETS}"
    echo "    Wakeword-Modelle:  ${INCLUDE_WAKEWORD_MODELS}"
    echo "    Piper-Modelle:     ${INCLUDE_PIPER_MODELS}"
    echo "    SymSpell:          ${INCLUDE_SYMSPELL}"
    echo "    LLM-Modelle:       ${INCLUDE_LLM_MODELS}"
    echo "    Plugin-Modelle:    ${INCLUDE_PLUGIN_MODELS}"
    echo "    Trainer-Source:    ${INCLUDE_TRAINER_SOURCE}"
    echo "    Trainings-Daten:   ${INCLUDE_TRAINING_DATA}"
    echo "    Dokumentation:     ${INCLUDE_DOCS}"
    echo "    Bash-Skripte:      ${INCLUDE_BASH_SCRIPTS}"
    echo ""
}

# --- Source-tar erstellen ---
create_source_tar() {
    local mode="$1"
    local version="$2"
    local release_dir="$3"
    local extra_excludes="$4"  # Zusaetzliche Exclude-Patterns (Leerzeichen-getrennt)

    local tar_name="trixy-${mode}-${version}.tar.gz"
    local tar_path="${release_dir}/${tar_name}"

    echo "  Erstelle ${tar_name}..."

    # VERSION-Datei temporaer in SOURCE_DIR schreiben (wird mit ins tar aufgenommen)
    local version_file="${SOURCE_DIR}/VERSION"
    generate_version_file "${version_file}" \
        "${mode}" \
        "${BUILD_VERSION}" \
        "${BUILD_NUMBER}" \
        "${BUILD_FULL_VERSION}" \
        "${BUILD_GIT_REV}" \
        "${BUILD_GIT_STATUS}"

    # Kopie ins Release-Verzeichnis
    cp "${version_file}" "${release_dir}/VERSION"

    # Basis-Excludes aus exclude_patterns.txt
    local exclude_opts=()
    while IFS= read -r pattern; do
        [[ -z "${pattern}" || "${pattern}" == \#* ]] && continue
        exclude_opts+=("--exclude=${pattern}")
    done < "${EXCLUDE_FILE}"

    # build.conf-basierte Excludes
    local conf_excludes
    conf_excludes=$(build_conf_excludes "${mode}")
    for pattern in ${conf_excludes}; do
        exclude_opts+=("--exclude=${pattern}")
    done

    # Modus-spezifische Excludes
    for pattern in ${extra_excludes}; do
        exclude_opts+=("--exclude=${pattern}")
    done

    # tar in temporaere Datei schreiben, dann verschieben
    local tmp_tar
    tmp_tar="$(mktemp)"

    local prefix="trixy-${mode}-${version}"
    tar czf "${tmp_tar}" \
        -C "${SOURCE_DIR}" \
        "${exclude_opts[@]}" \
        --exclude='make_installer/Release' \
        --transform="s,^\\.,${prefix}," \
        .

    mv "${tmp_tar}" "${tar_path}"

    # VERSION-Datei aus SOURCE_DIR wieder entfernen
    rm -f "${version_file}"

    echo "  -> ${tar_name} ($(du -h "${tar_path}" | cut -f1))"
}

# --- Installer-tar erstellen ---
create_installer_tar() {
    local mode="$1"
    local version="$2"
    local release_dir="$3"

    local tar_name="trixy-installer-${mode}-${version}.tar.gz"
    local tar_path="${release_dir}/${tar_name}"

    echo "  Erstelle ${tar_name}..."

    tar czf "${tar_path}" \
        -C "${INSTALLER_DIR}/.." \
        --transform='s,^installer,trixy_installer,' \
        --exclude='__pycache__' \
        --exclude='*.pyc' \
        installer/

    echo "  -> ${tar_name} ($(du -h "${tar_path}" | cut -f1))"
}

# --- install.sh generieren ---
generate_install_sh() {
    local mode="$1"
    local version="$2"
    local release_dir="$3"

    local install_sh="${release_dir}/install.sh"
    local source_tar="trixy-${mode}-${version}.tar.gz"
    local installer_tar="trixy-installer-${mode}-${version}.tar.gz"

    echo "  Generiere install.sh..."

    cat > "${install_sh}" << 'INSTALL_HEADER'
#!/usr/bin/env bash
# ============================================================================
# Trixy Installer — Bootstrap-Script
#
# Entpackt den Installer, erstellt ein temporaeres venv und startet die TUI.
# ============================================================================

set -euo pipefail

INSTALL_HEADER

    cat >> "${install_sh}" << INSTALL_VARS
# --- Eingebettete Werte ---
MODE="${mode}"
VERSION="${version}"
SOURCE_TAR="${source_tar}"
INSTALLER_TAR="${installer_tar}"

INSTALL_VARS

    cat >> "${install_sh}" << 'INSTALL_BODY'
# --- Farben ---
RED='\033[0;31m'
GREEN='\033[0;32m'
YELLOW='\033[1;33m'
NC='\033[0m'

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

cleanup() {
    if [[ -n "${TEMP_DIR}" && -d "${TEMP_DIR}" ]]; then
        echo -e "${YELLOW}Raeume auf...${NC}"
        rm -rf "${TEMP_DIR}"
    fi
}
trap cleanup EXIT

echo ""
echo -e "${GREEN}========================================"
echo "  Trixy Installer v${VERSION} [${MODE}]"
echo -e "========================================${NC}"
echo ""

# 1. Pruefe ob tar-Dateien vorhanden
if [[ ! -f "${SCRIPT_DIR}/${SOURCE_TAR}" ]]; then
    echo -e "${RED}FEHLER: ${SOURCE_TAR} nicht gefunden${NC}"
    exit 1
fi

if [[ ! -f "${SCRIPT_DIR}/${INSTALLER_TAR}" ]]; then
    echo -e "${RED}FEHLER: ${INSTALLER_TAR} nicht gefunden${NC}"
    exit 1
fi

# 2. Python >= 3.10 sicherstellen
echo "Pruefe Python-Version..."
PYTHON_BIN=""

for py in python3.12 python3.11 python3.10 python3; do
    if command -v "${py}" >/dev/null 2>&1; then
        py_minor=$("${py}" -c "import sys; print(sys.version_info.minor)")
        if [[ "${py_minor}" -ge 10 ]]; then
            PYTHON_BIN="${py}"
            break
        fi
    fi
done

if [[ -z "${PYTHON_BIN}" ]]; then
    echo -e "${YELLOW}Python >= 3.10 nicht gefunden. Versuche Installation...${NC}"
    if command -v apt-get >/dev/null 2>&1; then
        sudo apt-get update -qq
        sudo apt-get install -y -qq python3 python3-venv python3-pip
        PYTHON_BIN="python3"
    else
        echo -e "${RED}FEHLER: Python >= 3.10 wird benoetigt${NC}"
        exit 1
    fi
fi

echo "  Verwende: ${PYTHON_BIN} ($(${PYTHON_BIN} --version 2>&1))"

# 3. Installer-tar in temp-Verzeichnis entpacken
TEMP_DIR="$(mktemp -d)"
echo "Entpacke Installer nach ${TEMP_DIR}..."
tar xzf "${SCRIPT_DIR}/${INSTALLER_TAR}" -C "${TEMP_DIR}"

# 4. Installer-venv erstellen
INST_VENV="${TEMP_DIR}/installer-venv"
echo "Erstelle Installer-venv..."
"${PYTHON_BIN}" -m venv "${INST_VENV}"
"${INST_VENV}/bin/pip" install --upgrade pip -q 2>/dev/null
"${INST_VENV}/bin/pip" install -r "${TEMP_DIR}/trixy_installer/requirements.txt" -q

# 5. TUI starten
echo ""
echo -e "${GREEN}Starte Installer-TUI...${NC}"
echo ""

PYTHONPATH="${TEMP_DIR}" "${INST_VENV}/bin/python" -m trixy_installer \
    --mode "${MODE}" \
    --version "${VERSION}" \
    --source-archive "${SCRIPT_DIR}/${SOURCE_TAR}"

echo ""
echo -e "${GREEN}Installer beendet.${NC}"
INSTALL_BODY

    chmod +x "${install_sh}"
    echo "  -> install.sh generiert"
}

# --- Build zusammenfassen ---
print_summary() {
    local mode="$1"
    local version="$2"
    local release_dir="$3"

    echo ""
    echo "========================================"
    echo "  Build abgeschlossen: ${mode} v${BUILD_FULL_VERSION:-${version}}"
    echo "========================================"
    echo ""
    echo "  Version:      ${BUILD_VERSION:-${version}}"
    echo "  Build:        ${BUILD_NUMBER:-?}"
    echo "  FullVersion:  ${BUILD_FULL_VERSION:-${version}}"
    echo "  Git:          ${BUILD_GIT_REV:-unknown} (${BUILD_GIT_STATUS:-unknown})"
    echo ""
    echo "  Release-Verzeichnis: ${release_dir}"
    echo ""
    ls -lh "${release_dir}/"
    echo ""
    echo "  Deployment:"
    echo "    1. Release-Verzeichnis auf Zielgeraet kopieren"
    echo "    2. chmod +x install.sh"
    echo "    3. ./install.sh"
    echo ""
}