#!/bin/sh
set -e
CAIRN="https://cairn.panshi.io"
NAME="${1:-$(basename "$(pwd)")}"
G="\033[32m"; Y="\033[33m"; C="\033[36m"; R="\033[31m"; N="\033[0m"; D="\033[2m"

echo "${G}⬡ Cairn${N} Setting up in $(pwd)..."
echo "  ${D}正在 $(pwd) 中配置...${N}"
echo ""

if [ -f .mcp.json ]; then
  BACKUP=".mcp.json.bak.$(date +%Y%m%d%H%M%S)"
  echo "${Y}⚠ Found .mcp.json / 检测到已有 .mcp.json${N}"
  echo "  Will back up to / 将备份为: $BACKUP"
  echo "  Then write Cairn config / 然后写入 Cairn 配置"
  printf "  Continue / 继续? [Y/n] "
  read -r REPLY < /dev/tty || REPLY="y"
  case "$REPLY" in [nN]*) echo "Cancelled / 已取消"; exit 0 ;; esac
  cp .mcp.json "$BACKUP"
  echo "  ${G}✓${N} Backed up / 已备份: $BACKUP"
else
  echo "  No .mcp.json found / 未检测到 .mcp.json"
  echo "  Will create a new one / 将创建新文件"
  printf "  Continue / 继续? [Y/n] "
  read -r REPLY < /dev/tty || REPLY="y"
  case "$REPLY" in [nN]*) echo "Cancelled / 已取消"; exit 0 ;; esac
fi

echo ""
echo "  Creating project / 正在创建项目..."
RESP=$(curl -fsSL -X POST "$CAIRN/projects" -H "Content-Type: application/json" -d "{\"name\": \"$NAME\"}")
TOKEN=$(echo "$RESP" | grep -o '"token":"[^"]*"' | head -1 | cut -d'"' -f4)
PID=$(echo "$RESP" | grep -o '"project_id":"[^"]*"' | head -1 | cut -d'"' -f4)

if [ -z "$TOKEN" ]; then
  echo "${R}✗ Failed / 失败${N}"
  echo "$RESP"; exit 1
fi

cat > .mcp.json << MCPEOF
{
  "cairn": {
    "type": "http",
    "url": "$CAIRN/mcp",
    "headers": {
      "Authorization": "Bearer $TOKEN"
    }
  }
}
MCPEOF

echo ""
echo "${G}✓ Done!${N}"
echo ""
echo "  Project:   $PID"
echo "  Token:     $TOKEN"
echo "  Config:    .mcp.json"
echo ""
echo "  ${C}📊 Dashboard:${N} $CAIRN/dashboard"
echo "     Paste token to view sessions, locks, handoffs,"
echo "     changelog, memories, and quality checks."
echo "     用 token 登录查看 session、文件锁、任务、"
echo "     变更日志、记忆库、质量检查。"
echo ""
echo "  ${Y}⚠ Save your token — shown only once.${N}"
echo "     请保存 token —— 只显示这一次。"
echo "     Lost = cannot recover (but can rotate)."
echo "     丢失后无法恢复（但可以轮换）。"
echo ""
echo "  ${G}🔒 Privacy / 隐私:${N}"
echo "     Only session metadata stored (topics, paths, status)."
echo "     只存 session 元数据（主题、路径、状态）。"
echo "     Source code never stored — scanned and discarded."
echo "     源代码不存储——扫描后立即丢弃。"
echo ""
echo "  ${G}Next / 下一步:${N}"
echo "     Start your AI agent (Claude Code / Codex / Cursor / Pi)"
echo "     启动你的 AI agent，它会自动使用 Cairn 的 8 个工具。"