#!/bin/bash
# 部署通知脚本 - 支持 Telegram 和 Discord
# 使用方法: ./notify.sh <status> <title> <message> [color]
#   status: success 或 failure
#   title: 通知标题
#   message: 通知内容
#   color: Discord 消息颜色（可选，默认根据 status 自动选择）

set -e

STATUS="$1"
TITLE="$2"
MESSAGE="$3"
COLOR="${4:-}"

# 根据状态设置默认值
if [ "$STATUS" = "success" ]; then
  EMOJI="✅"
  DEFAULT_COLOR="3066993"  # 绿色
  STATUS_TEXT="成功"
elif [ "$STATUS" = "failure" ]; then
  EMOJI="❌"
  DEFAULT_COLOR="15158332"  # 红色
  STATUS_TEXT="失败"
else
  EMOJI="ℹ️"
  DEFAULT_COLOR="3447003"  # 蓝色
  STATUS_TEXT="通知"
fi

COLOR="${COLOR:-$DEFAULT_COLOR}"

# 校验 COLOR 必须是数字
if ! [[ "$COLOR" =~ ^[0-9]+$ ]]; then
  echo "⚠️  非法 COLOR 值: $COLOR，使用默认颜色 $DEFAULT_COLOR"
  COLOR="$DEFAULT_COLOR"
fi

# 获取 Git 信息
REPO="${GITEA_REPO:-unknown}"
BRANCH="${GITEA_REF_NAME:-unknown}"
COMMIT_SHA="${GITEA_SHA:-unknown}"
COMMIT_SHORT="${COMMIT_SHA:0:7}"
AUTHOR="${GITEA_ACTOR:-unknown}"
WORKFLOW="${GITEA_WORKFLOW:-unknown}"
RUN_NUMBER="${GITEA_RUN_NUMBER:-unknown}"
RUN_URL="${GITEA_SERVER_URL:-}/${GITEA_REPO}/actions/runs/${GITEA_RUN_ID:-}"

# HTML 转义函数（用于 Telegram）
html_escape() {
  local s="$1"
  s="${s//&/&amp;}"
  s="${s//</&lt;}"
  s="${s//>/&gt;}"
  s="${s//\"/&quot;}"
  printf '%s' "$s"
}

# ==================== Telegram 通知 ====================
send_telegram() {
  if [ -z "$TELEGRAM_BOT_TOKEN" ] || [ -z "$TELEGRAM_CHAT_ID" ]; then
    echo "⚠️  Telegram 配置缺失，跳过通知"
    return 0
  fi

  # 转义所有用户可控的变量
  local escaped_title escaped_message escaped_repo escaped_branch escaped_author escaped_workflow escaped_run_url
  escaped_title=$(html_escape "$TITLE")
  escaped_message=$(html_escape "$MESSAGE")
  escaped_repo=$(html_escape "$REPO")
  escaped_branch=$(html_escape "$BRANCH")
  escaped_author=$(html_escape "$AUTHOR")
  escaped_workflow=$(html_escape "$WORKFLOW")
  escaped_run_url=$(html_escape "$RUN_URL")

  local tg_message="${EMOJI} <b>${escaped_title}</b>

<b>状态:</b> ${STATUS_TEXT}
<b>仓库:</b> ${escaped_repo}
<b>分支:</b> ${escaped_branch}
<b>提交:</b> <code>${COMMIT_SHORT}</code>
<b>作者:</b> ${escaped_author}
<b>工作流:</b> ${escaped_workflow} #${RUN_NUMBER}

${escaped_message}

<a href=\"${escaped_run_url}\">查看详情</a>"

  echo "📤 发送 Telegram 通知..."
  
  local response
  response=$(curl -sS --connect-timeout 5 --max-time 15 -X POST \
    "https://api.telegram.org/bot${TELEGRAM_BOT_TOKEN}/sendMessage" \
    -d "chat_id=${TELEGRAM_CHAT_ID}" \
    --data-urlencode "text=${tg_message}" \
    -d "parse_mode=HTML" \
    -d "disable_web_page_preview=true" 2>&1) || {
    echo "❌ Telegram 请求失败: $response"
    return 1
  }

  if echo "$response" | grep -q '"ok":true'; then
    echo "✅ Telegram 通知发送成功"
  else
    echo "❌ Telegram 通知发送失败: $response"
    return 1
  fi
}

# ==================== Discord 通知 ====================
send_discord() {
  if [ -z "$DISCORD_WEBHOOK_URL" ]; then
    echo "⚠️  Discord Webhook 配置缺失，跳过通知"
    return 0
  fi

  echo "📤 发送 Discord 通知..."

  # 使用 python3 构建 JSON，防止注入
  local discord_payload
  discord_payload=$(python3 -c "
import json
import sys

payload = {
    'embeds': [{
        'title': sys.argv[1],
        'description': sys.argv[2],
        'color': int(sys.argv[3]),
        'fields': [
            {'name': '状态', 'value': sys.argv[4], 'inline': True},
            {'name': '仓库', 'value': sys.argv[5], 'inline': True},
            {'name': '分支', 'value': sys.argv[6], 'inline': True},
            {'name': '提交', 'value': sys.argv[7], 'inline': True},
            {'name': '作者', 'value': sys.argv[8], 'inline': True},
            {'name': '工作流', 'value': sys.argv[9], 'inline': True}
        ],
        'footer': {'text': 'Gitea Actions'},
        'timestamp': sys.argv[10],
        'url': sys.argv[11]
    }]
}
print(json.dumps(payload, ensure_ascii=False))
" \
    "${EMOJI} ${TITLE}" \
    "${MESSAGE}" \
    "${COLOR}" \
    "${STATUS_TEXT}" \
    "${REPO}" \
    "${BRANCH}" \
    "\`${COMMIT_SHORT}\`" \
    "${AUTHOR}" \
    "${WORKFLOW} #${RUN_NUMBER}" \
    "$(date -u +%Y-%m-%dT%H:%M:%SZ)" \
    "${RUN_URL}"
  )

  local http_code response_body
  response_body=$(mktemp)
  http_code=$(curl -sS -o "$response_body" -w "%{http_code}" \
    --connect-timeout 5 --max-time 15 -X POST \
    "$DISCORD_WEBHOOK_URL" \
    -H "Content-Type: application/json" \
    -d "$discord_payload" 2>&1) || {
    echo "❌ Discord 请求失败: $http_code"
    rm -f "$response_body"
    return 1
  }

  if [ "$http_code" = "204" ] || [ "$http_code" = "200" ]; then
    echo "✅ Discord 通知发送成功 (HTTP $http_code)"
    rm -f "$response_body"
  else
    echo "❌ Discord 通知发送失败 (HTTP $http_code): $(cat "$response_body")"
    rm -f "$response_body"
    return 1
  fi
}

# ==================== 主流程 ====================
main() {
  echo "🔔 开始发送部署通知..."
  echo "状态: $STATUS"
  echo "标题: $TITLE"
  echo "消息: $MESSAGE"
  echo ""

  local failed=0

  # 发送 Telegram 通知
  if ! send_telegram; then
    failed=$((failed + 1))
  fi

  echo ""

  # 发送 Discord 通知
  if ! send_discord; then
    failed=$((failed + 1))
  fi

  echo ""
  if [ $failed -eq 0 ]; then
    echo "✅ 所有通知发送完成"
  elif [ $failed -ge 2 ]; then
    echo "❌ 所有通知渠道均发送失败"
    exit 1  # 全部失败时退出非 0，让 CI 可见
  else
    echo "⚠️  部分通知发送失败 ($failed 个)"
    # 部分失败不退出，避免影响主流程
  fi
}

main