package com.example.demo.admin;
import org.springframework.http.ResponseEntity;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.web.bind.annotation.*;

import java.util.*;

@RestController
@RequestMapping("/api/admin/parts")
public class AdminPartController {

    private final JdbcTemplate jdbcTemplate;

    public AdminPartController(JdbcTemplate jdbcTemplate) {
        this.jdbcTemplate = jdbcTemplate;
    }

    @GetMapping
    public ResponseEntity<?> list(@RequestParam(name = "shopId", required = false) Long shopId,
                                  @RequestParam(name = "kw", required = false) String kw,
                                  @RequestParam(name = "status", required = false) String status,
                                  @RequestParam(name = "page", defaultValue = "1") int page,
                                  @RequestParam(name = "size", defaultValue = "20") int size) {
        int offset = Math.max(0, page - 1) * Math.max(1, size);
        StringBuilder sql = new StringBuilder(
                "SELECT p.id,p.user_id AS userId,p.shop_id AS shopId,s.name AS shopName,p.name,p.brand,p.model,p.spec,p.is_blacklisted " +
                "FROM products p JOIN shops s ON s.id=p.shop_id WHERE p.deleted_at IS NULL");
        List<Object> ps = new ArrayList<>();
        if (shopId != null) { sql.append(" AND p.shop_id=?"); ps.add(shopId); }
        if (kw != null && !kw.isBlank()) {
            sql.append(" AND (p.name LIKE ? OR p.brand LIKE ? OR p.model LIKE ? OR p.spec LIKE ?)");
            String like = "%" + kw.trim() + "%";
            ps.add(like); ps.add(like); ps.add(like); ps.add(like);
        }
        if (status != null && !status.isBlank()) {
            // 支持两种入参："1/0"（正常/黑名单）或历史字符串（忽略过滤避免报错）
            try {
                int s = Integer.parseInt(status);
                int isBlack = (s == 1 ? 0 : 1);
                sql.append(" AND p.is_blacklisted=?");
                ps.add(isBlack);
            } catch (NumberFormatException ignore) {
                // 兼容历史：pending/approved/rejected → 不加过滤
            }
        }
        sql.append(" ORDER BY p.id DESC LIMIT ").append(offset).append(", ").append(size);
        List<Map<String,Object>> list = jdbcTemplate.query(sql.toString(), ps.toArray(), (rs, i) -> {
            Map<String,Object> m = new LinkedHashMap<>();
            m.put("id", rs.getLong("id"));
            m.put("userId", rs.getLong("userId"));
            m.put("shopId", rs.getLong("shopId"));
            m.put("shopName", rs.getString("shopName"));
            m.put("name", rs.getString("name"));
            m.put("brand", rs.getString("brand"));
            m.put("model", rs.getString("model"));
            m.put("spec", rs.getString("spec"));
            m.put("status", rs.getInt("is_blacklisted") == 1 ? 0 : 1);
            return m;
        });
        Map<String,Object> body = new HashMap<>(); body.put("list", list); return ResponseEntity.ok(body);
    }

    @PutMapping("/{id}/blacklist")
    public ResponseEntity<?> blacklist(@PathVariable("id") Long id) {
        jdbcTemplate.update("UPDATE products SET is_blacklisted=1 WHERE id=?", id);
        return ResponseEntity.ok().build();
    }

    @PutMapping("/{id}/restore")
    public ResponseEntity<?> restore(@PathVariable("id") Long id) {
        jdbcTemplate.update("UPDATE products SET is_blacklisted=0 WHERE id=?", id);
        return ResponseEntity.ok().build();
    }
}