"use client";

import React, { useEffect, useState } from "react";
import { FaBell, FaUser } from "react-icons/fa";
import TabBar from "../components/TabBar";
import ModeratorRequestModal from "../components/ModeratorRequestDetailsModal";

const API_BASE = process.env.NEXT_PUBLIC_API_BASE_URL;

const statusMap = {
  approved: { label: "Принята", color: "#94E067" },
  rejected: { label: "Отклонена", color: "#E06767" },
};

const HistoryRequestModeratorPage = () => {
  const [requests, setRequests] = useState([]);
  const [selectedRequest, setSelectedRequest] = useState(null);
  const [moderatorName, setModeratorName] = useState("Модератор");
  const [loading, setLoading] = useState(true);
  const [error, setError] = useState("");

  const getAccessToken = () => {
    if (typeof window === "undefined") return null;
    const saved = localStorage.getItem("authUser");
    const authUser = saved ? JSON.parse(saved) : null;
    return authUser?.accessToken || null;
  };

  // профиль модератора
  useEffect(() => {
    const fetchProfile = async () => {
      if (!API_BASE) return;
      const token = getAccessToken();
      if (!token) return;

      try {
        const res = await fetch(`${API_BASE}/users/me`, {
          headers: {
            Accept: "application/json",
            Authorization: `Bearer ${token}`,
          },
        });
        if (!res.ok) return;
        const data = await res.json();
        const fullName =
          [data.first_name, data.last_name].filter(Boolean).join(" ").trim() ||
          data.email;
        setModeratorName(fullName);
      } catch {
        // дефолт остаётся
      }
    };

    fetchProfile();
  }, []);

  // история модерации: только approved / rejected
  useEffect(() => {
    const fetchHistory = async () => {
      if (!API_BASE) {
        setError("API_BASE_URL не задан");
        setLoading(false);
        return;
      }
      const token = getAccessToken();
      if (!token) {
        setError("Вы не авторизованы");
        setLoading(false);
        return;
      }

      try {
        const res = await fetch(`${API_BASE}/moderation/requests/my`, {
          method: "GET",
          headers: {
            Accept: "application/json",
            Authorization: `Bearer ${token}`,
          },
        });

        const text = await res.text();
        let data = null;
        if (text) {
          try {
            data = JSON.parse(text);
          } catch {
            data = null;
          }
        }

        if (!res.ok) {
          let msg = "Не удалось загрузить историю заявок";
          if (data && typeof data === "object" && data.error) {
            msg = data.error;
          } else if (text) {
            msg = text;
          }
          setError(msg);
          setLoading(false);
          return;
        }

        const list = Array.isArray(data) ? data : [];

        // status: { request_status: "approved" | "rejected", valid: true }
        const filtered = list.filter((item) => {
          const s = String(item.status?.request_status || "").toLowerCase();
          return s === "approved" || s === "rejected";
        });

        const mapped = filtered.map((item) => {
          const rawStatus = String(
            item.status?.request_status || ""
          ).toLowerCase();
          const m = statusMap[rawStatus] || {
            label: rawStatus || "Неизвестен",
            color: "#E2E2E2",
          };

          const created = new Date(item.created_at);
          const date = created.toLocaleDateString("ru-RU");
          const time = created.toLocaleTimeString("ru-RU", {
            hour: "2-digit",
            minute: "2-digit",
          });

          return {
            id: item.id,
            title: item.title,
            description: item.description,
            status: m.label,
            statusColor: m.color,
            date,
            time,
            createdAt: date,
            fullName: item.requester_name,
            rejectReason: item.moderation_comment || "",
            address: item.city ? `${item.city}, ${item.address}` : item.address,
            rawStatus, // "approved" | "rejected"
          };
        });

        setRequests(mapped);
        setLoading(false);
      } catch (e) {
        setError(e.message || "Ошибка сети");
        setLoading(false);
      }
    };

    fetchHistory();
  }, []);

  const handleOpen = (req) => {
    // пробрасываем rawStatus, чтобы модалка знала настоящий статус
    setSelectedRequest({
      ...req,
      status: req.rawStatus,
    });
  };

  const handleClose = () => {
    setSelectedRequest(null);
  };

  const handleModeratedUpdate = (updated) => {
    setRequests((prev) =>
      prev.map((r) =>
        r.id === updated.id ? { ...r, rawStatus: updated.status } : r
      )
    );
  };

  return (
    <div className="min-h-screen w-full bg-[#90D2F9] flex justify-center px-4">
      <div className="relative w-full max-w-md flex flex-col pb-20 pt-4">
        {/* Header */}
        <header className="flex items-center justify-between mb-4">
          <div className="flex items-center gap-2">
            <div className="w-8 h-8 rounded-full border border-white flex items-center justify-center">
              <FaUser className="text-white text-sm" />
            </div>
            <p className="font-montserrat font-extrabold text-[20px] leading-[22px] text-white">
              {moderatorName}
            </p>
          </div>
          <button
            type="button"
            className="w-8 h-8 rounded-full border border-white flex items-center justify-center"
          >
            <FaBell className="text-white text-sm" />
          </button>
        </header>

        <h1 className="font-montserrat font-extrabold text-[20px] leading-[22px] text-white mb-3">
          История заявок
        </h1>

        {error && (
          <p className="mb-2 text-xs font-montserrat text-red-200">
            {error}
          </p>
        )}

        {/* Список заявок */}
        <main className="space-y-3 overflow-y-auto pr-1 max-h-[80vh]">
          {loading && (
            <p className="text-white text-sm font-montserrat">
              Загрузка истории...
            </p>
          )}

          {!loading && requests.length === 0 && !error && (
            <p className="text-white text-sm font-montserrat">
              История модерации пуста
            </p>
          )}

          {requests.map((req) => (
            <button
              key={req.id}
              type="button"
              onClick={() => handleOpen(req)}
              className="w-full text-left bg-white rounded-xl px-3 py-2 flex flex-col gap-1"
            >
              <div className="flex items-center justify-between gap-2">
                <span
                  className="inline-flex items-center justify-center px-2 py-0.5 rounded-full font-montserrat text-[12px] font-semibold text-white"
                  style={{ backgroundColor: req.statusColor }}
                >
                  {req.status}
                </span>
                <div className="text-right leading-tight">
                  <p className="font-montserrat text-[10px] text-black">
                    {req.date}
                  </p>
                  <p className="font-montserrat text-[10px] text-black">
                    {req.time}
                  </p>
                </div>
              </div>

              <p className="font-montserrat font-semibold text-[15px] leading-[18px] text-black mt-1">
                {req.title}
              </p>

              <p className="font-montserrat text-[11px] text-black/80">
                {req.fullName}
              </p>
              <p className="font-montserrat text-[10px] text-black/70">
                {req.address}
              </p>

              <div className="mt-2 w-full bg-[#94E067] rounded-lg py-3 flex items-center justify-center">
                <span className="font-montserrat font-bold text-[15px] leading-[18px] text-white">
                  Развернуть
                </span>
              </div>
            </button>
          ))}
        </main>

        {selectedRequest && (
          <ModeratorRequestModal
            request={selectedRequest}
            onClose={handleClose}
            onModerated={handleModeratedUpdate}
          />
        )}

        <TabBar />
      </div>
    </div>
  );
};

export default HistoryRequestModeratorPage;