"use client";

import { useRef, useState } from "react";
import ImageCropDialog from "@/components/ImageCropDialog";
import styles from "./CatalogForm.module.css";

export type LocalImage = {
  key: string;
  file?: File;
  previewUrl: string;
  mediaId?: string;
};

export function FeaturedImageField({
  label = "Thumbnail",
  value,
  aspect = 1,
  disabled,
  onChange,
}: {
  label?: string;
  value: LocalImage | null;
  aspect?: number;
  disabled?: boolean;
  onChange: (value: LocalImage | null) => void;
}) {
  const inputRef = useRef<HTMLInputElement>(null);
  const [cropSource, setCropSource] = useState<string | null>(null);
  const [cropName, setCropName] = useState("image.jpg");
  const wide = aspect !== 1;

  return (
    <div className={styles.thumbBlock}>
      <div className={styles.blockHead}>
        <span>{label}</span>
        <div className={styles.inlineActions}>
          <button
            type="button"
            className={styles.linkBtn}
            disabled={disabled}
            onClick={() => inputRef.current?.click()}
          >
            {value ? "Replace" : "Upload"}
          </button>
          {value ? (
            <button
              type="button"
              className={styles.linkBtn}
              disabled={disabled}
              onClick={() => {
                if (value.previewUrl.startsWith("blob:")) {
                  URL.revokeObjectURL(value.previewUrl);
                }
                onChange(null);
              }}
            >
              Remove
            </button>
          ) : null}
        </div>
      </div>
      <button
        type="button"
        className={`${styles.thumbFrame}${wide ? ` ${styles.thumbFrameWide}` : ""}`}
        disabled={disabled}
        onClick={() => inputRef.current?.click()}
      >
        {value?.previewUrl ? (
          <img src={value.previewUrl} alt="" />
        ) : (
          <span>Add {label.toLowerCase()}</span>
        )}
      </button>
      <input
        ref={inputRef}
        type="file"
        accept="image/*"
        className={styles.fileInput}
        disabled={disabled}
        onChange={(event) => {
          const file = event.target.files?.[0];
          event.target.value = "";
          if (!file) return;
          const url = URL.createObjectURL(file);
          setCropName(file.name || "image.jpg");
          setCropSource(url);
        }}
      />
      <ImageCropDialog
        open={Boolean(cropSource)}
        imageSrc={cropSource}
        title={`Crop ${label.toLowerCase()}`}
        aspect={aspect}
        outputType="image/jpeg"
        fileName={cropName.replace(/\.[^.]+$/, "") || "image"}
        onCancel={() => {
          if (cropSource?.startsWith("blob:")) URL.revokeObjectURL(cropSource);
          setCropSource(null);
        }}
        onComplete={(file, previewUrl) => {
          if (cropSource?.startsWith("blob:")) URL.revokeObjectURL(cropSource);
          if (value?.previewUrl.startsWith("blob:")) {
            URL.revokeObjectURL(value.previewUrl);
          }
          setCropSource(null);
          onChange({
            key: `${Date.now()}`,
            file,
            previewUrl,
          });
        }}
      />
    </div>
  );
}

export function GalleryImagesField({
  items,
  disabled,
  onChange,
}: {
  items: LocalImage[];
  disabled?: boolean;
  onChange: (items: LocalImage[]) => void;
}) {
  const inputRef = useRef<HTMLInputElement>(null);

  return (
    <div className={styles.stack}>
      <div className={styles.blockHead}>
        <span>
          Gallery images <em className={styles.optional}>(optional)</em>
        </span>
        <button
          type="button"
          className={styles.linkBtn}
          disabled={disabled}
          onClick={() => inputRef.current?.click()}
        >
          Add images
        </button>
      </div>
      {items.length ? (
        <div className={styles.galleryGrid}>
          {items.map((item) => (
            <div key={item.key} className={styles.galleryItem}>
              <img src={item.previewUrl} alt="" />
              <button
                type="button"
                disabled={disabled}
                onClick={() => {
                  if (item.previewUrl.startsWith("blob:")) {
                    URL.revokeObjectURL(item.previewUrl);
                  }
                  onChange(items.filter((row) => row.key !== item.key));
                }}
              >
                Remove
              </button>
            </div>
          ))}
        </div>
      ) : (
        <button
          type="button"
          className={styles.galleryAdd}
          disabled={disabled}
          onClick={() => inputRef.current?.click()}
        >
          Add images
        </button>
      )}
      <input
        ref={inputRef}
        type="file"
        accept="image/*"
        multiple
        className={styles.fileInput}
        disabled={disabled}
        onChange={(event) => {
          const files = Array.from(event.target.files ?? []).filter((file) =>
            file.type.startsWith("image/"),
          );
          event.target.value = "";
          if (!files.length) return;
          onChange([
            ...items,
            ...files.map((file) => ({
              key: `${file.name}-${file.size}-${Date.now()}-${Math.random()}`,
              file,
              previewUrl: URL.createObjectURL(file),
            })),
          ]);
        }}
      />
    </div>
  );
}

export function TagsField({
  tags,
  disabled,
  onChange,
}: {
  tags: string[];
  disabled?: boolean;
  onChange: (tags: string[]) => void;
}) {
  const [draft, setDraft] = useState("");

  function addTag() {
    const next = draft.trim();
    if (!next) return;
    if (tags.some((tag) => tag.toLowerCase() === next.toLowerCase())) {
      setDraft("");
      return;
    }
    onChange([...tags, next]);
    setDraft("");
  }

  return (
    <div className={styles.field}>
      <span>
        Tags <em className={styles.optional}>(optional)</em>
      </span>
      {tags.length ? (
        <div className={styles.tags}>
          {tags.map((tag) => (
            <span key={tag} className={styles.tag}>
              {tag}
              <button
                type="button"
                disabled={disabled}
                aria-label={`Remove ${tag}`}
                onClick={() => onChange(tags.filter((item) => item !== tag))}
              >
                ×
              </button>
            </span>
          ))}
        </div>
      ) : null}
      <div className={styles.tagRow}>
        <input
          value={draft}
          disabled={disabled}
          placeholder="Add a tag"
          onChange={(event) => setDraft(event.target.value)}
          onKeyDown={(event) => {
            if (event.key === "Enter") {
              event.preventDefault();
              addTag();
            }
          }}
        />
        <button
          type="button"
          className={styles.tagAdd}
          disabled={disabled}
          onClick={addTag}
        >
          Add
        </button>
      </div>
    </div>
  );
}