#!/bin/bash

# Lade globale Konfiguration
CONFIG_FILE_PATH="$(dirname "$0")/config.sh"
if [ -f "$CONFIG_FILE_PATH" ]; then
    source "$CONFIG_FILE_PATH"
else
    echo "FEHLER: Globale Konfigurationsdatei config.sh nicht gefunden!"
    exit 1
fi

# === Logging Funktion (früh definieren für Wrapper-Logik) ===
LOG_FILE_BASE="${LOG_DIR_BASE}/$(basename "$0" .sh)"
log_message() {
    local key="${1:-main}"
    local msg="$2"
    local log_target="${LOG_FILE_BASE}.log"
    [ "$key" != "main" ] && log_target="${LOG_FILE_BASE}_${key}.log"
    
    local message_to_log; message_to_log="$(date '+%Y-%m-%d %H:%M:%S') - [${key}] - ${msg}"
    echo "${message_to_log}" | tee -a "$log_target"
}

# --- Wrapper-Logik zur Verarbeitung aller Welten, wenn kein Argument übergeben wird ---
if [ -z "$1" ]; then
    log_message "main" "Kein spezifischer Welt-Schlüssel angegeben. Verarbeite alle Welten mit web.conf..."
    shopt -s nullglob
    for world_dir in "${MINETESTMAPPER_WORLD_DATA_BASE_PATH}"/*/; do
        if [ -f "${world_dir}web.conf" ]; then
            world_key_to_process=$(basename "$world_dir")
            log_message "main" "--- Starte Durchlauf für '${world_key_to_process}' ---"
            # Rufe das Skript für die gefundene Welt rekursiv auf
            bash "$0" "$world_key_to_process"
        fi
    done
    shopt -u nullglob
    log_message "main" "Alle Welten verarbeitet."
    exit 0
fi


# #############################################################################
# Ab hier beginnt die Logik für eine EINZELNE Welt
# #############################################################################

# Prüfe Abhängigkeiten, bevor irgendetwas anderes passiert
/opt/luweb/check_dependencies.sh || exit 1

WORLD_KEY=$1

# Pfad zum Verzeichnis der aktuellen Welt
CURRENT_MINETEST_WORLD_DATA_PATH="${MINETESTMAPPER_WORLD_DATA_BASE_PATH}${WORLD_KEY}/"

if [ ! -d "$CURRENT_MINETEST_WORLD_DATA_PATH" ]; then
    log_message "${WORLD_KEY}" "FEHLER: Das Welt-Datenverzeichnis '${CURRENT_MINETEST_WORLD_DATA_PATH}' wurde nicht gefunden!"
    exit 1
fi
if [ ! -f "${CURRENT_MINETEST_WORLD_DATA_PATH}world.mt" ]; then
    log_message "${WORLD_KEY}" "FEHLER: Die Datei 'world.mt' wurde im Verzeichnis '${CURRENT_MINETEST_WORLD_DATA_PATH}' nicht gefunden!"
    exit 1
fi

# === Lade Standardwerte und überschreibe mit welt-spezifischer web.conf ===
MM_OPT_ZOOM_LEVEL="$DEFAULT_MM_OPT_ZOOM_LEVEL"; MM_OPT_MIN_Y="$DEFAULT_MM_OPT_MIN_Y"
MM_OPT_ORIGINCOLOR="$DEFAULT_MM_OPT_ORIGINCOLOR"; MM_OPT_PLAYERCOLOR="$DEFAULT_MM_OPT_PLAYERCOLOR"
MM_OPT_SCALECOLOR="$DEFAULT_MM_OPT_SCALECOLOR"; MM_OPT_BGCOLOR="$DEFAULT_MM_OPT_BGCOLOR"
MM_CFG_DRAWALPHA="$DEFAULT_MM_CFG_DRAWALPHA"; MM_CFG_DRAWORIGIN="false"
MM_CFG_DRAWPLAYERS="$DEFAULT_MM_CFG_DRAWPLAYERS"; MM_CFG_DRAWSCALE="false"
TILES_SUBDIR_NAME="$DEFAULT_TILES_SUBDIR_NAME"; GDAL2TILES_ZOOM_LEVELS="$DEFAULT_GDAL2TILES_ZOOM_LEVELS"
WEB_MAP_PNG_FILENAME="$DEFAULT_WEB_MAP_PNG_FILENAME"; RESIZED_MAX_DIMENSION="$DEFAULT_RESIZED_MAX_DIMENSION"
ARCHIVE_SUBDIR_NAME="$DEFAULT_ARCHIVE_SUBDIR_NAME"

WORLD_WEB_CONFIG_FILE="${CURRENT_MINETEST_WORLD_DATA_PATH}web.conf" 
if [ -f "$WORLD_WEB_CONFIG_FILE" ]; then
    log_message "${WORLD_KEY}" "Lade Web-Konfiguration aus ${WORLD_WEB_CONFIG_FILE}"
    source "$WORLD_WEB_CONFIG_FILE"
fi

# === Abgeleitete Variablen ===
SCRIPT_BASENAME=$(basename "$0" .sh)
MINETESTMAPPER_PATH="${BASE_SCRIPT_DIR}/${MINETESTMAPPER_EXEC_NAME}"
LOG_FILE="${LOG_DIR_BASE}/${SCRIPT_BASENAME}_${WORLD_KEY}.log"
LOCK_FILE="${LOCK_FILE_BASE_DIR}/${SCRIPT_BASENAME}_${WORLD_KEY}.lock"

RAW_MAP_OUTPUT_DIR_ABSOLUTE="${BASE_SCRIPT_DIR}/${RAW_MAP_BASE_SUBDIR}/${WORLD_KEY}"
RAW_MAP_ABSOLUTE_PATH="${RAW_MAP_OUTPUT_DIR_ABSOLUTE}/${RAW_MAP_FILENAME}"
UNKNOWN_NODES_FILE_ABSOLUTE_PATH="${RAW_MAP_OUTPUT_DIR_ABSOLUTE}/unknown_nodes.txt"
MAP_INFO_FILE_ABSOLUTE_PATH="${RAW_MAP_OUTPUT_DIR_ABSOLUTE}/map_info.txt"

WEB_CURRENT_WORLD_DIR="${WEB_ROOT_PATH}/${WEB_MAPS_BASE_SUBDIR}/${WORLD_KEY}"
TILES_FULL_OUTPUT_PATH="${WEB_CURRENT_WORLD_DIR}/${TILES_SUBDIR_NAME}"
WEB_MAP_PNG_FULL_PATH="${WEB_CURRENT_WORLD_DIR}/${WEB_MAP_PNG_FILENAME}"
ARCHIVE_BASE_WEB_PATH="${WEB_CURRENT_WORLD_DIR}/${ARCHIVE_SUBDIR_NAME}"

# === Funktion zur Archivbereinigung ===
prune_archives() {
    log_message "${WORLD_KEY}" "Starte Archivbereinigung für Welt '${WORLD_KEY}' im Pfad '${ARCHIVE_BASE_WEB_PATH}'..."
    if [ ! -d "$ARCHIVE_BASE_WEB_PATH" ]; then log_message "${WORLD_KEY}" "Archiv-Basispfad ${ARCHIVE_BASE_WEB_PATH} nicht gefunden."; return; fi
    local today_seconds=$(date +%s); local cutoff_date_14_days=$(date -d "today - 14 days" +%Y-%m-%d)
    local cutoff_seconds_14_days=$(date -d "$cutoff_date_14_days" +%s)
    log_message "${WORLD_KEY}" "Archivbereinigung: Behalte tägliche Bilder bis einschl. ${cutoff_date_14_days}. Ältere nur Montage."
    local images_processed=0; local images_deleted=0
    find "$ARCHIVE_BASE_WEB_PATH" -type f -name "*.png" | while IFS= read -r archive_file_path; do
        ((images_processed++))
        if [[ "$archive_file_path" =~ /([0-9]{4})/([0-9]{2})/([0-9]{2})\.png$ ]]; then
            local year="${BASH_REMATCH[1]}"; local month="${BASH_REMATCH[2]}"; local day="${BASH_REMATCH[3]}"
            local img_date_str="${year}-${month}-${day}"; local img_date_seconds; local day_of_week
            if ! date -d "$img_date_str" "+%s" >/dev/null 2>&1; then log_message "${WORLD_KEY}" "WARNUNG: Ungültiges Datum: '${img_date_str}' ('${archive_file_path}')."; continue; fi
            img_date_seconds=$(date -d "$img_date_str" +%s)
            if [ "$img_date_seconds" -ge "$cutoff_seconds_14_days" ]; then log_message "${WORLD_KEY}" "BEHALTE (<=14 Tage): ${archive_file_path}"
            else day_of_week=$(date -d "$img_date_str" +%u); if [ "$day_of_week" -eq 1 ]; then log_message "${WORLD_KEY}" "BEHALTE (>14 Tage, Montag): ${archive_file_path}"; else log_message "${WORLD_KEY}" "LÖSCHE (>14 Tage, kein Montag): ${archive_file_path}"; if rm -f "$archive_file_path"; then ((images_deleted++)); else log_message "${WORLD_KEY}" "FEHLER Löschen: ${archive_file_path}"; fi; fi; fi
        else log_message "${WORLD_KEY}" "WARNUNG: Pfad '${archive_file_path}' passt nicht zu JJJJ/MM/TT.png."; fi
    done
    log_message "${WORLD_KEY}" "Archivbereinigung: ${images_processed} geprüft, ${images_deleted} gelöscht."
    log_message "${WORLD_KEY}" "Räume leere Archiv-Unterverzeichnisse auf..."; find "$ARCHIVE_BASE_WEB_PATH" -mindepth 1 -type d -empty -print -delete >> "$LOG_FILE" 2>&1
}

# === Hauptlogik für eine einzelne Welt ===
exec 200>"$LOCK_FILE"
flock -n 200 || { log_message "${WORLD_KEY}" "Script ${SCRIPT_BASENAME}.sh ist bereits für diese Welt aktiv (Lock: ${LOCK_FILE}). Beende."; exit 1; }
trap 'rm -f "$LOCK_FILE"; log_message "${WORLD_KEY}" "Skript beendet."' EXIT
log_message "${WORLD_KEY}" "Skript gestartet."

mkdir -p "${RAW_MAP_OUTPUT_DIR_ABSOLUTE}"

# 1. Generiere die map.png
log_message "${WORLD_KEY}" "Starte minetestmapper zur Kartengenerierung..."
MM_ALL_OPTIONS_STR="--zoom ${MM_OPT_ZOOM_LEVEL}"; if [ "${MM_CFG_DRAWALPHA}" = "true" ]; then MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --drawalpha"; fi
if [ "${MM_CFG_DRAWORIGIN}" = "true" ]; then MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --draworigin"; fi
if [ "${MM_CFG_DRAWPLAYERS}" = "true" ]; then MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --drawplayers"; fi
if [ "${MM_CFG_DRAWSCALE}" = "true" ]; then MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --drawscale"; fi
MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --origincolor '${MM_OPT_ORIGINCOLOR}' --playercolor '${MM_OPT_PLAYERCOLOR}'"
MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --scalecolor '${MM_OPT_SCALECOLOR}' --bgcolor '${MM_OPT_BGCOLOR}'"
MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --min-y ${MM_OPT_MIN_Y}"

MAP_GENERATION_COMMAND="'${MINETESTMAPPER_PATH}' -i '${CURRENT_MINETEST_WORLD_DATA_PATH}' -o '${RAW_MAP_ABSOLUTE_PATH}' ${MM_ALL_OPTIONS_STR}"
MAPPER_RUN_OUTPUT_CAPTURE_FILE=$(mktemp)
(set -o pipefail; eval "${MAP_GENERATION_COMMAND}" 2>&1 | tee -a "$LOG_FILE" > "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"); MAPPER_EXIT_STATUS=$?
if [ ${MAPPER_EXIT_STATUS} -ne 0 ]; then log_message "${WORLD_KEY}" "FEHLER: minetestmapper (Status: ${MAPPER_EXIT_STATUS})."; rm -f "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"; exit 1; fi
if [ ! -f "$RAW_MAP_ABSOLUTE_PATH" ]; then log_message "${WORLD_KEY}" "FEHLER: ${RAW_MAP_ABSOLUTE_PATH} nicht gefunden."; rm -f "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"; exit 1; fi
log_message "${WORLD_KEY}" "map.png erfolgreich generiert."

# 2. Erstelle map_info.txt
log_message "${WORLD_KEY}" "Erstelle map_info.txt..."
MAP_DIMENSIONS=$(identify -format "%wx%h" "$RAW_MAP_ABSOLUTE_PATH" 2>/dev/null)
EXTENT_COMMAND="'${MINETESTMAPPER_PATH}' -i '${CURRENT_MINETEST_WORLD_DATA_PATH}' --extent ${MM_ALL_OPTIONS_STR}"
MAP_EXTENT=$(eval "${EXTENT_COMMAND}" 2>/dev/null | sed 's/Map extent: //')
if [ -n "$MAP_DIMENSIONS" ] && [ -n "$MAP_EXTENT" ]; then
    { echo "map_dimension=${MAP_DIMENSIONS}"; echo "map_extent=${MAP_EXTENT}"; } > "$MAP_INFO_FILE_ABSOLUTE_PATH"
    log_message "${WORLD_KEY}" "map_info.txt erstellt: Dim=${MAP_DIMENSIONS}, Extent=${MAP_EXTENT}"
else
    log_message "${WORLD_KEY}" "FEHLER: map_info.txt konnte nicht erstellt werden."
fi

# 3. Verarbeite unknown_nodes.txt
awk ' /Unknown nodes:/ {b=1;next} b&&NF==0 {b=0} b&&!/^[ \t]/ {b=0} b{n=$0;sub(/^[ \t]+/,"",n);sub(/[ \t]+$/,"",n);if(n~/:/&&n!="")print n} ' "$MAPPER_RUN_OUTPUT_CAPTURE_FILE" > "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}.new"
if [ -s "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}.new" ]; then
    log_message "${WORLD_KEY}" "Neue 'Unknown nodes' gefunden. Füge zu bestehender Datei hinzu."
    cat "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}.new" >> "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}"
    sort -u "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}" -o "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}"
fi
rm -f "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}.new" "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"

# 4. Erzeuge Web-Vorschaukarte mit vips
log_message "${WORLD_KEY}" "Erzeuge Web-Version von map.png (max ${RESIZED_MAX_DIMENSION}px) mit 'vips'..."
mkdir -p "$(dirname "$WEB_MAP_PNG_FULL_PATH")"
(set -o pipefail; vips thumbnail "$RAW_MAP_ABSOLUTE_PATH" "$WEB_MAP_PNG_FULL_PATH" "${RESIZED_MAX_DIMENSION}" --height "${RESIZED_MAX_DIMENSION}" --size "down" 2>&1 | tee -a "$LOG_FILE")
if [ $? -ne 0 ]; then log_message "${WORLD_KEY}" "FEHLER: Skalierung mit 'vips' fehlgeschlagen."; else log_message "${WORLD_KEY}" "Verkleinerte Web-map.png erstellt."; fi

# 5. Generiere Kacheln
log_message "${WORLD_KEY}" "Generiere Kacheln (Zoom: ${GDAL2TILES_ZOOM_LEVELS})..."
TEMP_TILES_DIR="${TILES_FULL_OUTPUT_PATH}_temp_$(date +%s)"; rm -rf "$TEMP_TILES_DIR";
(set -o pipefail; gdal2tiles.py --profile=raster --xyz --zoom="${GDAL2TILES_ZOOM_LEVELS}" -r near "${RAW_MAP_ABSOLUTE_PATH}" "${TEMP_TILES_DIR}" 2>&1 | tee -a "$LOG_FILE")
if [ $? -ne 0 ]; then log_message "${WORLD_KEY}" "FEHLER: gdal2tiles.py fehlgeschlagen."; rm -rf "$TEMP_TILES_DIR"; exit 1; fi
rm -rf "$TILES_FULL_OUTPUT_PATH" 
if ! mv "$TEMP_TILES_DIR" "$TILES_FULL_OUTPUT_PATH"; then log_message "${WORLD_KEY}" "FEHLER: Verschieben der Kacheln fehlgeschlagen."; exit 1; fi
log_message "${WORLD_KEY}" "Kacheln erfolgreich generiert."

# 6. Archiv-Management
prune_archives
ARCHIVE_YEAR=$(date '+%Y'); ARCHIVE_MONTH=$(date '+%m'); ARCHIVE_DAY=$(date '+%d')
ARCHIVE_DAILY_TARGET_DIR="${ARCHIVE_BASE_WEB_PATH}/${ARCHIVE_YEAR}/${ARCHIVE_MONTH}"
ARCHIVE_DAILY_FILE_PATH="${ARCHIVE_DAILY_TARGET_DIR}/${ARCHIVE_DAY}.png"
if [ ! -f "$ARCHIVE_DAILY_FILE_PATH" ]; then
    log_message "${WORLD_KEY}" "Erzeuge Archivbild für ${ARCHIVE_DAILY_FILE_PATH}..."
    mkdir -p "$ARCHIVE_DAILY_TARGET_DIR"
    (set -o pipefail; vips thumbnail "$RAW_MAP_ABSOLUTE_PATH" "$ARCHIVE_DAILY_FILE_PATH" "${RESIZED_MAX_DIMENSION}" --height "${RESIZED_MAX_DIMENSION}" --size "down" 2>&1 | tee -a "$LOG_FILE")
    if [ $? -eq 0 ]; then log_message "${WORLD_KEY}" "Verkleinertes Archivbild erstellt."; else log_message "${WORLD_KEY}" "FEHLER: Archivbild nicht erstellt.";fi
fi

# 7. Finale Info-Dateien kopieren
log_message "${WORLD_KEY}" "Kopiere finale Info-Dateien ins Web-Verzeichnis..."
mkdir -p "$WEB_CURRENT_WORLD_DIR"
echo "$(date '+%Y-%m-%d %H:%M:%S %Z')" > "${WEB_CURRENT_WORLD_DIR}/last_update.txt"
cp "$UNKNOWN_NODES_FILE_ABSOLUTE_PATH" "${WEB_CURRENT_WORLD_DIR}/unknown_nodes.txt"
cp "$MAP_INFO_FILE_ABSOLUTE_PATH" "${WEB_CURRENT_WORLD_DIR}/map_info.txt"

exit 0