#!/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"

REPO_NAME=""
VISIBILITY="public"
COMMIT_MSG=""

while [[ $# -gt 0 ]]; do
    case "$1" in
        -m)
            [[ $# -ge 2 ]] || { log_err "-m 需要一個訊息參數"; exit 1; }
            COMMIT_MSG="$2"
            shift 2
            ;;
        public|private)
            VISIBILITY="$1"
            shift
            ;;
        -h|--help)
            cat >&2 <<'EOF'
Usage: publish.sh [repo] [public|private] [-m "commit message"]
EOF
            exit 0
            ;;
        -*)
            log_err "未知參數：$1"
            exit 1
            ;;
        *)
            if [[ -z "$REPO_NAME" ]]; then
                REPO_NAME="$1"
            elif [[ "$VISIBILITY" == "public" ]]; then
                VISIBILITY="$1"
            else
                log_err "多餘參數：$1"
                exit 1
            fi
            shift
            ;;
    esac
done

REPO_NAME="${REPO_NAME:-$(basename "$PWD")}"

case "$VISIBILITY" in
    public)  PRIVATE=false ;;
    private) PRIVATE=true ;;
    *)
        log_err "可見性只能是 public 或 private，收到：${VISIBILITY}"
        exit 1
        ;;
esac

load_config

CLEAN_URL="${GITEA_URL}/${GITEA_USER}/${REPO_NAME}.git"
WEB_URL="${GITEA_URL}/${GITEA_USER}/${REPO_NAME}"

log_info "建立 Gitea repo：${GITEA_USER}/${REPO_NAME} (${VISIBILITY})"

gitea_api POST "/user/repos" \
    "{\"name\":\"${REPO_NAME}\",\"private\":${PRIVATE},\"auto_init\":false,\"default_branch\":\"main\"}"

case "$HTTP_CODE" in
    201) log_ok "repo 已建立" ;;
    409) log_warn "repo 已存在，略過建立步驟" ;;
    401|403)
        log_err "Gitea 授權失敗 (HTTP ${HTTP_CODE})"
        {
            echo "請確認 ${CONFIG_FILE} 的 GITEA_TOKEN 是否正確、權限是否包含 write:repository"
            cat "$GITEA_API_RESP_FILE"
            echo ""
        } >&2
        exit 1
        ;;
    *)
        log_err "建立 repo 失敗 (HTTP ${HTTP_CODE})"
        { cat "$GITEA_API_RESP_FILE"; echo ""; } >&2
        exit 1
        ;;
esac

if [[ ! -d .git ]]; then
    log_info "git init"
    git init -b main >/dev/null
fi

if ! git rev-parse --verify HEAD >/dev/null 2>&1; then
    git add -A
    if git diff --cached --quiet; then
        log_info "工作目錄沒有檔案，建立空的 initial commit"
        git commit --allow-empty -m "${COMMIT_MSG:-Initial commit}" >/dev/null
    else
        log_info "建立 initial commit"
        git commit -m "${COMMIT_MSG:-Initial commit}" >/dev/null
    fi
else
    git add -A
    if ! git diff --cached --quiet; then
        log_info "提交未提交的變更"
        git commit -m "${COMMIT_MSG:-Update}" >/dev/null
    fi
fi

BRANCH="$(git rev-parse --abbrev-ref HEAD)"

if git remote get-url origin >/dev/null 2>&1; then
    git remote set-url origin "$CLEAN_URL"
else
    git remote add origin "$CLEAN_URL"
fi

log_info "推送到 origin (${CLEAN_URL}) branch=${BRANCH}"
git_push_with_token "$BRANCH"

log_done "完成"
echo "   Branch：    ${BRANCH}" >&2
# stdout：最終結構化輸出
echo "$WEB_URL"