#!/bin/bash

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

# Prüfe Abhängigkeiten, bevor irgendetwas anderes passiert
# Annahme: check_dependencies.sh wurde um 'vips' erweitert
/opt/luweb/check_dependencies.sh || exit 1

# Welt-Schlüssel (Verzeichnisname) aus Argument oder Standardwert
WORLD_KEY="${1:-$DEFAULT_WORLD_NAME_KEY}"

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

if [ ! -d "$CURRENT_MINETEST_WORLD_DATA_PATH" ]; then
    echo "$(date '+%Y-%m-%d %H:%M:%S') - [${WORLD_KEY}] - FEHLER: Das Welt-Datenverzeichnis '${CURRENT_MINETEST_WORLD_DATA_PATH}' wurde nicht gefunden!"
    exit 1
fi
if [ ! -f "${CURRENT_MINETEST_WORLD_DATA_PATH}world.mt" ]; then
    echo "$(date '+%Y-%m-%d %H:%M:%S') - [${WORLD_KEY}] - FEHLER: Die Datei 'world.mt' wurde im Verzeichnis '${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="$DEFAULT_MM_CFG_DRAWALPHA"; MM_CFG_DRAWORIGIN="$DEFAULT_MM_CFG_DRAWORIGIN"
MM_CFG_DRAWPLAYERS="$DEFAULT_MM_CFG_DRAWPLAYERS"; MM_CFG_DRAWSCALE="$DEFAULT_MM_CFG_DRAWSCALE"
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
    echo "$(date '+%Y-%m-%d %H:%M:%S') - [${WORLD_KEY}] - Lade Web-Konfiguration aus ${WORLD_WEB_CONFIG_FILE}"
    source "$WORLD_WEB_CONFIG_FILE"
else
    echo "$(date '+%Y-%m-%d %H:%M:%S') - [${WORLD_KEY}] - WARNUNG: Keine web.conf (${WORLD_WEB_CONFIG_FILE}) gefunden. Verwende globale/Default-Einstellungen."
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}"

# === Logging Funktion ===
log_message() {
    local message_to_log; message_to_log="$(date '+%Y-%m-%d %H:%M:%S') - [${WORLD_KEY}] - $1"
    echo "${message_to_log}" | tee -a "$LOG_FILE"
}

# === Funktion zur Archivbereinigung ===
prune_archives() {
    log_message "Starte Archivbereinigung für Welt '${WORLD_KEY}' im Pfad '${ARCHIVE_BASE_WEB_PATH}'..."
    if [ ! -d "$ARCHIVE_BASE_WEB_PATH" ]; then log_message "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 "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=$((images_processed + 1))
        if [[ "$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 "$img_date_str" "+%s" >/dev/null 2>&1; then log_message "WARNUNG: Ungültiges Datum: '${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 "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 "BEHALTE (>14 Tage, Montag): ${archive_file_path}"; else log_message "LÖSCHE (>14 Tage, kein Montag): ${archive_file_path}"; if rm -f "$archive_file_path"; then images_deleted=$((images_deleted + 1)); else log_message "FEHLER Löschen: ${archive_file_path}"; fi; fi; fi
        else log_message "WARNUNG: Pfad '${archive_file_path}' passt nicht zu JJJJ/MM/TT.png."; fi
    done
    log_message "Archivbereinigung: ${images_processed} geprüft, ${images_deleted} gelöscht."
    log_message "Räume leere Archiv-Unterverzeichnisse auf..."; find "$ARCHIVE_BASE_WEB_PATH" -mindepth 2 -maxdepth 2 -type d -empty -print -delete >> "$LOG_FILE" 2>&1
    find "$ARCHIVE_BASE_WEB_PATH" -mindepth 1 -maxdepth 1 -type d -empty -print -delete >> "$LOG_FILE" 2>&1; log_message "Aufräumen leerer Archiv-Unterverzeichnisse abgeschlossen."
}

# === Hauptlogik ===
exec 200>"$LOCK_FILE"
flock -n 200 || { echo "$(date '+%Y-%m-%d %H:%M:%S') - [${WORLD_KEY}] Script ${SCRIPT_BASENAME}.sh ist bereits aktiv (Lock: ${LOCK_FILE}). Beende." | tee -a "$LOG_FILE"; exit 1; }
trap 'rm -f "$LOCK_FILE"; log_message "Skript ${SCRIPT_BASENAME}.sh beendet."' EXIT
mkdir -p "$LOG_DIR_BASE"; log_message "Skript ${SCRIPT_BASENAME}.sh gestartet für Welt-Schlüssel: ${WORLD_KEY}"

mkdir -p "${RAW_MAP_OUTPUT_DIR_ABSOLUTE}"
if [ ! -d "${RAW_MAP_OUTPUT_DIR_ABSOLUTE}" ]; then log_message "FEHLER: Rohkarten-Ausgabeverz. (${RAW_MAP_OUTPUT_DIR_ABSOLUTE}) nicht erstellt."; exit 1; fi

# 1. Generiere die map.png
if [ ! -x "$MINETESTMAPPER_PATH" ]; then log_message "FEHLER: minetestmapper (${MINETESTMAPPER_PATH}) nicht ausführbar."; exit 1; fi
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 '${MM_OPT_ORIGINCOLOR}'"; MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --playercolor '${MM_OPT_PLAYERCOLOR}'"
MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --scalecolor '${MM_OPT_SCALECOLOR}'"; MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --bgcolor '${MM_OPT_BGCOLOR}'"
MM_ALL_OPTIONS_STR="${MM_ALL_OPTIONS_STR} --min-y ${MM_OPT_MIN_Y}"

MAP_GENERATION_COMMAND_TO_EVAL="'${MINETESTMAPPER_PATH}' -i '${CURRENT_MINETEST_WORLD_DATA_PATH}' -o '${RAW_MAP_ABSOLUTE_PATH}' ${MM_ALL_OPTIONS_STR}"
log_message "Starte minetestmapper zur Kartengenerierung (Optionen: ${MM_ALL_OPTIONS_STR})."
MAPPER_RUN_OUTPUT_CAPTURE_FILE=$(mktemp); MAPPER_EXIT_STATUS=0
(set -o pipefail; eval "${MAP_GENERATION_COMMAND_TO_EVAL}" 2>&1 | tee -a "$LOG_FILE" > "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"); MAPPER_EXIT_STATUS=$?
if [ ${MAPPER_EXIT_STATUS} -ne 0 ]; then log_message "FEHLER: minetestmapper Kartengenerierung (Status: ${MAPPER_EXIT_STATUS})."; tail -n 15 "$MAPPER_RUN_OUTPUT_CAPTURE_FILE" | while IFS= read -r line; do log_message "  ${line}"; done; rm -f "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"; exit 1; fi
if [ ! -f "$RAW_MAP_ABSOLUTE_PATH" ]; then log_message "FEHLER: ${RAW_MAP_ABSOLUTE_PATH} nicht gefunden (minetestmapper Status ${MAPPER_EXIT_STATUS})."; rm -f "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"; exit 1; fi
log_message "${RAW_MAP_FILENAME} erfolgreich generiert nach ${RAW_MAP_ABSOLUTE_PATH}."

log_message "Erstelle map_info.txt..."
MAP_DIMENSIONS=""; MAP_EXTENT=""
if ! command -v identify &> /dev/null; then
    log_message "WARNUNG: 'identify' (Teil von ImageMagick) nicht gefunden. map_dimension kann nicht ermittelt werden."
else
    MAP_DIMENSIONS=$(identify -format "%wx%h" "$RAW_MAP_ABSOLUTE_PATH" 2>/dev/null)
fi

EXTENT_COMMAND_TO_EVAL="'${MINETESTMAPPER_PATH}' -i '${CURRENT_MINETEST_WORLD_DATA_PATH}' --extent ${MM_ALL_OPTIONS_STR}"
log_message "Ermittle Map Extent mit: --extent"
MAP_EXTENT_OUTPUT=$(eval "${EXTENT_COMMAND_TO_EVAL}" 2>/dev/null)
if [ -n "$MAP_EXTENT_OUTPUT" ]; then
    MAP_EXTENT=$(echo "$MAP_EXTENT_OUTPUT" | sed 's/Map extent: //')
fi

if [ -n "$MAP_DIMENSIONS" ] && [ -n "$MAP_EXTENT" ]; then
    {
        echo "map_dimension=${MAP_DIMENSIONS}"
        echo "map_extent=${MAP_EXTENT}"
    } > "$MAP_INFO_FILE_ABSOLUTE_PATH"
    log_message "map_info.txt erfolgreich erstellt: Dimension=${MAP_DIMENSIONS}, Extent=${MAP_EXTENT}"
else
    log_message "FEHLER: map_info.txt konnte nicht erstellt werden, da Informationen fehlen!"
    [ -z "$MAP_DIMENSIONS" ] && log_message "-> Bild-Dimensionen konnten nicht ermittelt werden."
    [ -z "$MAP_EXTENT" ] && log_message "-> Karten-Extent konnte nicht ermittelt werden."
fi

if [ -f "$MAPPER_RUN_OUTPUT_CAPTURE_FILE" ]; then
    TEMP_NEW_UNKNOWN_NODES_FILE="${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}.new_found"
    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} ' "$MAPPER_RUN_OUTPUT_CAPTURE_FILE" > "$TEMP_NEW_UNKNOWN_NODES_FILE"
    if [ -s "$TEMP_NEW_UNKNOWN_NODES_FILE" ]; then log_message "Neue 'Unknown nodes' gefunden."; touch "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}"; cat "$TEMP_NEW_UNKNOWN_NODES_FILE" >> "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}"; sort -u "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}" -o "${UNKNOWN_NODES_FILE_ABSOLUTE_PATH}"; log_message "$(wc -l < "$TEMP_NEW_UNKNOWN_NODES_FILE") 'Unknown nodes' verarbeitet.";
    else log_message "Keine neuen 'Unknown nodes' gefunden."; fi; rm -f "$TEMP_NEW_UNKNOWN_NODES_FILE"
else log_message "WARNUNG: minetestmapper-Ausgabe nicht verarbeitbar."; fi
rm -f "$MAPPER_RUN_OUTPUT_CAPTURE_FILE"

# === Web-Vorschaukarte (verkleinert) erstellen mit VIPS ===
log_message "Erzeuge Web-Version von ${RAW_MAP_FILENAME} (max ${RESIZED_MAX_DIMENSION}px) mit 'vips' nach ${WEB_MAP_PNG_FULL_PATH}..."
mkdir -p "$(dirname "$WEB_MAP_PNG_FULL_PATH")"
if [ ! -f "$RAW_MAP_ABSOLUTE_PATH" ]; then 
    log_message "FEHLER: Quelldatei ${RAW_MAP_ABSOLUTE_PATH} für Web-Vorschau nicht gefunden!"
else
    # KORREKTUR: --size "down" statt ">"
    (set -o pipefail; vips thumbnail "$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 "FEHLER: Skalierung mit 'vips' fehlgeschlagen."
    else
        log_message "Verkleinerte Web-map.png mit 'vips' erfolgreich erstellt."
    fi
fi

# === Tiles generieren ===
log_message "Generiere Kacheln (Zoom: ${GDAL2TILES_ZOOM_LEVELS}) nach ${TILES_FULL_OUTPUT_PATH}..."
if [ ! -f "$RAW_MAP_ABSOLUTE_PATH" ]; then log_message "FEHLER: Quelldatei ${RAW_MAP_ABSOLUTE_PATH} für Tiling nicht gefunden!"; else
    TEMP_TILES_DIR="${TILES_FULL_OUTPUT_PATH}_temp_$(date +%s)"; rm -rf "$TEMP_TILES_DIR"; mkdir -p "$(dirname "$TILES_FULL_OUTPUT_PATH")" 
    log_message "Führe gdal2tiles.py aus..."
    # KORREKTUR: -r "near" statt "nearest"
    (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 [ $? -ne 0 ]; then log_message "FEHLER: gdal2tiles.py fehlgeschlagen."; rm -rf "$TEMP_TILES_DIR"; exit 1; fi
    log_message "Kacheln in ${TEMP_TILES_DIR} generiert."
    log_message "Entferne altes Kachel-Verzeichnis: ${TILES_FULL_OUTPUT_PATH}"; rm -rf "$TILES_FULL_OUTPUT_PATH" 
    log_message "Verschiebe neue Kacheln nach ${TILES_FULL_OUTPUT_PATH}"
    if ! mv "$TEMP_TILES_DIR" "$TILES_FULL_OUTPUT_PATH"; then log_message "FEHLER: Verschieben der Kacheln fehlgeschlagen."; exit 1; fi
    log_message "Neue Kacheln erfolgreich verschoben."
fi

# === Archivbereinigung ===
prune_archives

# === Tägliches Archivbild ===
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"
log_message "Prüfe Notwendigkeit für Archivbild für ${ARCHIVE_YEAR}-${ARCHIVE_MONTH}-${ARCHIVE_DAY}..."
if [ ! -f "$ARCHIVE_DAILY_FILE_PATH" ]; then
    log_message "Archivbild ${ARCHIVE_DAILY_FILE_PATH} existiert noch nicht. Versuche Erstellung..."
    if [ ! -f "$RAW_MAP_ABSOLUTE_PATH" ]; then 
        log_message "FEHLER: Quelldatei (${RAW_MAP_ABSOLUTE_PATH}) nicht gefunden! Archiv nicht erstellt."
    else
        mkdir -p "$ARCHIVE_DAILY_TARGET_DIR"
        if [ ! -d "$ARCHIVE_DAILY_TARGET_DIR" ]; then 
            log_message "FEHLER: Archiv-Zielverzeichnis ${ARCHIVE_DAILY_TARGET_DIR} nicht erstellt."
        else
            log_message "Erzeuge Archivbild (max ${RESIZED_MAX_DIMENSION}px) mit 'vips' für ${ARCHIVE_DAILY_FILE_PATH}..."
            # KORREKTUR: --size "down" statt ">"
            (set -o pipefail; vips thumbnail "$RAW_MAP_ABSOLUTE_PATH" "$ARCHIVE_DAILY_FILE_PATH" "${RESIZED_MAX_DIMENSION}" --height "${RESIZED_MAX_DIMENSION}" --size "down" 2>&1 | tee -a "$LOG_FILE")
            if [ $? -eq 0 ]; then 
                log_message "Verkleinertes Archivbild erstellt."
                if [ ! -s "$ARCHIVE_DAILY_FILE_PATH" ]; then log_message "WARNUNG: Archivbild ${ARCHIVE_DAILY_FILE_PATH} ist leer."; fi
            else 
                log_message "FEHLER: Verkleinertes Archivbild nicht erstellt (vips)."
            fi
        fi
    fi
else 
    log_message "Archivbild ${ARCHIVE_DAILY_FILE_PATH} existiert bereits."
fi

# === Status- und Info-Dateien im Webverzeichnis ===
log_message "Erstelle Status- und Info-Dateien im Webverzeichnis ${WEB_CURRENT_WORLD_DIR}..."
mkdir -p "$WEB_CURRENT_WORLD_DIR"
echo "$(date '+%Y-%m-%d %H:%M:%S %Z')" > "${WEB_CURRENT_WORLD_DIR}/last_update.txt" && log_message "last_update.txt erstellt." || log_message "FEHLER: last_update.txt nicht erstellt."
if [ -f "$UNKNOWN_NODES_FILE_ABSOLUTE_PATH" ]; then
    if cp "$UNKNOWN_NODES_FILE_ABSOLUTE_PATH" "${WEB_CURRENT_WORLD_DIR}/unknown_nodes.txt"; then log_message "unknown_nodes.txt nach Web kopiert."; else log_message "FEHLER: unknown_nodes.txt nicht nach Web kopiert."; fi
else log_message "WARNUNG: ${UNKNOWN_NODES_FILE_ABSOLUTE_PATH} für Web-Kopie nicht gefunden."; fi

if [ -f "$MAP_INFO_FILE_ABSOLUTE_PATH" ]; then
    if cp "$MAP_INFO_FILE_ABSOLUTE_PATH" "${WEB_CURRENT_WORLD_DIR}/map_info.txt"; then
        log_message "map_info.txt nach Web kopiert."
    else
        log_message "FEHLER: map_info.txt konnte nicht nach Web kopiert werden."
    fi
else
    log_message "WARNUNG: Quelldatei map_info.txt für Web-Kopie nicht gefunden."
fi

exit 0