#!/bin/bash

## Anpassen !!! ##
GIT_REPO_PATH="/home/alf/MEINWORM"
NEW_FILES_DIR="Neu"
ARCHIVE_TARGET_DIR="Archiv"
LOG_FILE="/home/alf/archive_sync_interactive.log" # Pfad anpassen

## Ende des Anpassen-Blocks ##

log_message() { echo "[$(date +"%Y-%m-%d %H:%M:%S")] $1" | tee -a "$LOG_FILE"; }

get_next_version_number() {
    local base_name="$1"
    local extension="$2"
    local max_version=0
    local found_files=()
    readarray -t found_files < <(find "$ARCHIVE_TARGET_DIR" -type f -name "${base_name}_v*.${extension}")

    for existing_version_file in "${found_files[@]}"; do
        local part_without_ext=$(basename "$existing_version_file" ".${extension}")
        local current_version_str="${part_without_ext##*_v}"
        if [[ -n "$current_version_str" && "$current_version_str" =~ ^[0-9]+$ ]]; then
            if (( current_version_str > max_version )); then max_version=$current_version_str; fi
        fi
    done
    echo $((max_version + 1))
}

log_message "--- Interactive Archive Sync Script Started ---"
cd "$GIT_REPO_PATH" || { log_message "ERROR: Could not change to Git repository directory. Exiting."; exit 1; }
mkdir -p "$ARCHIVE_TARGET_DIR"

readarray -t FILES_TO_PROCESS < <(find "$NEW_FILES_DIR" -type f)

for FILE_PATH_IN_NEW in "${FILES_TO_PROCESS[@]}"; do
    FILE_FULL_NAME=$(basename "$FILE_PATH_IN_NEW")
    FILE_NAME_NO_EXT="${FILE_FULL_NAME%.*}"
    FILE_EXTENSION="${FILE_FULL_NAME##*.}"
    TARGET_FILE_PATH_ORIG="$ARCHIVE_TARGET_DIR/$FILE_FULL_NAME"

    log_message "Processing file: $FILE_PATH_IN_NEW"

    if git ls-files --error-unmatch -- "$TARGET_FILE_PATH_ORIG" &>/dev/null; then
        log_message "  File '$FILE_FULL_NAME' already exists in '$ARCHIVE_TARGET_DIR/'."
        echo ""
        echo "Die Datei '$FILE_FULL_NAME' existiert bereits im Archiv."
        echo "Möchten Sie diese Datei als neue Version (z.B. '${FILE_NAME_NO_EXT}_vX.${FILE_EXTENSION}') hinzufügen?"
        read -p "[j/n/a (ja/nein/abbrechen)] " choice
        echo ""

        case "$choice" in
            j|J )
                NEXT_VERSION=$(get_next_version_number "$FILE_NAME_NO_EXT" "$FILE_EXTENSION")
                NEW_VERSIONED_FILE_NAME="${FILE_NAME_NO_EXT}_v${NEXT_VERSION}.${FILE_EXTENSION}"
                TARGET_FILE_PATH_VERSIONED="$ARCHIVE_TARGET_DIR/$NEW_VERSIONED_FILE_NAME"
                log_message "  Adding '$FILE_FULL_NAME' as versioned file: '$NEW_VERSIONED_FILE_NAME'."
                cp "$FILE_PATH_IN_NEW" "$TARGET_FILE_PATH_VERSIONED"
                git add "$TARGET_FILE_PATH_VERSIONED"
                if ! git diff --cached --quiet --exit-code; then
                    git commit -m "Add versioned file: $NEW_VERSIONED_FILE_NAME" "$TARGET_FILE_PATH_VERSIONED" || {
                        log_message "  ERROR: Commit for '$NEW_VERSIONED_FILE_NAME' failed. Restoring."
                        git restore --staged "$TARGET_FILE_PATH_VERSIONED"; git restore "$TARGET_FILE_PATH_VERSIONED"
                    }
                    if [ $? -eq 0 ]; then log_message "  Successfully committed '$NEW_VERSIONED_FILE_NAME'."; fi
                else log_message "  WARNING: No changes staged for '$NEW_VERSIONED_FILE_NAME'. Skipping commit."; fi
                ;;
            n|N ) log_message "  Skipping '$FILE_FULL_NAME'. File remains in '$NEW_FILES_DIR'.";;
            a|A ) log_message "  User chose to abort. Exiting."; exit 0;;
            * ) log_message "  Invalid input for '$FILE_FULL_NAME'. Skipping and continuing.";;
        esac
    else
        log_message "  File '$FILE_FULL_NAME' is new to '$ARCHIVE_TARGET_DIR/'. Adding..."
        cp "$FILE_PATH_IN_NEW" "$TARGET_FILE_PATH_ORIG"
        git add "$TARGET_FILE_PATH_ORIG"
        if ! git diff --cached --quiet --exit-code; then
            git commit -m "Add new file: $FILE_FULL_NAME to archive" "$TARGET_FILE_PATH_ORIG" || {
                log_message "  ERROR: Commit for '$FILE_FULL_NAME' failed. (Possible pre-commit hook issue?)"
                git restore --staged "$TARGET_FILE_PATH_ORIG"; git restore "$TARGET_FILE_PATH_ORIG"
            }
            if [ $? -eq 0 ]; then log_message "  Successfully committed '$FILE_FULL_NAME'."; fi
        else log_message "  WARNING: No changes staged for '$FILE_FULL_NAME'. Skipping commit."; fi
    fi
done

log_message "--- Summary ---"
log_message "Total files processed from '$NEW_FILES_DIR'."
log_message "Files committed: $COMMITTED_COUNT"
log_message "Files skipped: $SKIP_COUNT"
log_message "No new files committed. Skipping push." # Da kein Remote genutzt wird
log_message "--- Interactive Archive Sync Script Finished ---"
exit 0