"use client";

/* Загрузка фото квартиры к оценке (#394). */
/* eslint-disable @next/next/no-img-element -- фото отдаёт API, next/image тут лишний */
import { useCallback, useEffect, useRef, useState } from "react";

import { API_BASE_URL } from "@/lib/api";
import { getOrCreateSessionId } from "@/lib/sessionId";

const BASE = "/api/v1/trade-in";
const MAX_PHOTOS = 12;

interface PhotoMeta {
  id: string;
  filename: string | null;
  content_type: string;
  size_bytes: number | null;
  uploaded_at: string;
}

export function PhotoUpload({ estimateId }: { estimateId: string }) {
  const [photos, setPhotos] = useState<PhotoMeta[]>([]);
  const [uploading, setUploading] = useState(false);
  const [error, setError] = useState<string | null>(null);
  const inputRef = useRef<HTMLInputElement>(null);

  const refresh = useCallback(async () => {
    try {
      const r = await fetch(`${API_BASE_URL}${BASE}/estimate/${estimateId}/photos`);
      if (r.ok) setPhotos((await r.json()) as PhotoMeta[]);
    } catch {
      /* список фото некритичен — молча игнорируем */
    }
  }, [estimateId]);

  useEffect(() => {
    void refresh();
  }, [refresh]);

  async function handleFiles(files: FileList | null) {
    if (!files || files.length === 0) return;
    setUploading(true);
    setError(null);
    const sid = getOrCreateSessionId();
    for (const file of Array.from(files)) {
      const form = new FormData();
      form.append("file", file);
      try {
        const r = await fetch(
          `${API_BASE_URL}${BASE}/estimate/${estimateId}/photos`,
          {
            method: "POST",
            body: form,
            headers: sid ? { "X-Session-Id": sid } : {},
          },
        );
        if (!r.ok) setError(`${file.name}: ошибка загрузки (${r.status})`);
      } catch {
        setError(`${file.name}: сеть недоступна`);
      }
    }
    setUploading(false);
    if (inputRef.current) inputRef.current.value = "";
    await refresh();
  }

  const full = photos.length >= MAX_PHOTOS;

  return (
    <article className="card">
      <div className="card-body">
        <div
          style={{
            display: "flex",
            justifyContent: "space-between",
            alignItems: "center",
            marginBottom: 12,
          }}
        >
          <h3 style={{ fontSize: 15, fontWeight: 600 }}>Фото квартиры</h3>
          <span style={{ color: "var(--muted)", fontSize: 13 }}>
            {photos.length} / {MAX_PHOTOS}
          </span>
        </div>

        <input
          ref={inputRef}
          type="file"
          accept="image/*"
          multiple
          disabled={uploading || full}
          onChange={(e) => handleFiles(e.target.files)}
        />

        {uploading && (
          <p style={{ color: "var(--muted)", fontSize: 13, marginTop: 8 }}>
            Загрузка…
          </p>
        )}
        {full && !uploading && (
          <p style={{ color: "var(--muted)", fontSize: 13, marginTop: 8 }}>
            Достигнут лимит {MAX_PHOTOS} фото.
          </p>
        )}
        {error && (
          <p style={{ color: "#c0392b", fontSize: 13, marginTop: 8 }}>{error}</p>
        )}

        {photos.length > 0 && (
          <div style={{ display: "flex", gap: 8, flexWrap: "wrap", marginTop: 12 }}>
            {photos.map((p) => (
              <img
                key={p.id}
                src={`${API_BASE_URL}${BASE}/estimate/${estimateId}/photos/${p.id}`}
                alt={p.filename ?? "фото квартиры"}
                style={{
                  width: 96,
                  height: 96,
                  objectFit: "cover",
                  borderRadius: 8,
                  border: "1px solid var(--border, #e2e2e2)",
                }}
              />
            ))}
          </div>
        )}
      </div>
    </article>
  );
}