#!/usr/bin/env bash
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
# shellcheck source=lib/common.sh
source "${SCRIPT_DIR}/lib/common.sh"

usage() {
    cat >&2 <<'EOF'
Usage: meta.sh <repo> [--desc "description"] [--topics "a,b,c"]

  --desc    設定 repo description
  --topics  覆蓋式設定 topic list（逗號分隔）
EOF
    exit 1
}

[[ $# -ge 1 ]] || usage

REPO=""
DESC=""
HAS_DESC=0
TOPICS_CSV=""
HAS_TOPICS=0

while [[ $# -gt 0 ]]; do
    case "$1" in
        --desc)
            [[ $# -ge 2 ]] || { log_err "--desc 需要一個值"; exit 1; }
            DESC="$2"; HAS_DESC=1; shift 2 ;;
        --topics)
            [[ $# -ge 2 ]] || { log_err "--topics 需要一個值"; exit 1; }
            TOPICS_CSV="$2"; HAS_TOPICS=1; shift 2 ;;
        -h|--help) usage ;;
        -*) log_err "未知參數：$1"; usage ;;
        *)
            if [[ -z "$REPO" ]]; then REPO="$1"; else log_err "多餘參數：$1"; usage; fi
            shift ;;
    esac
done

[[ -n "$REPO" ]] || usage
[[ $HAS_DESC -eq 1 || $HAS_TOPICS -eq 1 ]] || { log_err "必須至少提供 --desc 或 --topics"; usage; }

load_config
require_cmd jq

if [[ $HAS_DESC -eq 1 ]]; then
    ESCAPED_DESC="$(printf '%s' "$DESC" | jq -Rs .)"
    log_info "更新 description"
    gitea_api PATCH "/repos/${GITEA_USER}/${REPO}" "{\"description\":${ESCAPED_DESC}}"
    case "$HTTP_CODE" in
        200|201) log_ok "description 已更新" ;;
        404) log_err "找不到 repo：${GITEA_USER}/${REPO}"; exit 1 ;;
        *) log_err "更新 description 失敗 (HTTP ${HTTP_CODE})"; { cat "$GITEA_API_RESP_FILE"; echo ""; } >&2; exit 1 ;;
    esac
fi

if [[ $HAS_TOPICS -eq 1 ]]; then
    TOPICS_JSON="$(printf '%s' "$TOPICS_CSV" | jq -R 'split(",") | map(select(length > 0))')"
    log_info "覆蓋 topics：${TOPICS_JSON}"
    gitea_api PUT "/repos/${GITEA_USER}/${REPO}/topics" "{\"topics\":${TOPICS_JSON}}"
    case "$HTTP_CODE" in
        200|204) log_ok "topics 已更新" ;;
        404) log_err "找不到 repo：${GITEA_USER}/${REPO}"; exit 1 ;;
        422) log_err "topics 格式錯誤"; { cat "$GITEA_API_RESP_FILE"; echo ""; } >&2; exit 1 ;;
        *) log_err "更新 topics 失敗 (HTTP ${HTTP_CODE})"; { cat "$GITEA_API_RESP_FILE"; echo ""; } >&2; exit 1 ;;
    esac
fi

log_done "完成"
echo "${GITEA_URL}/${GITEA_USER}/${REPO}"