"use client";

/* eslint-disable @next/next/no-img-element */

import type { MediaKind } from "@prisma/client";

import type { MediaOption } from "@/lib/media";
import { cn } from "@/lib/utils";
import { Input } from "@/components/ui/input";
import { Label } from "@/components/ui/label";

export type MediaFieldState = {
  mode: "upload" | "external" | "library";
  assetId: string;
  url: string;
  label: string;
  kind: MediaKind;
};

type MediaFieldPickerProps = {
  title: string;
  value: MediaFieldState;
  onChange: (nextValue: MediaFieldState) => void;
  options: MediaOption[];
  inputName: string;
  fileFieldName: string;
  fileLabel?: string;
  externalLabel?: string;
  libraryLabel?: string;
  accept?: string;
};

const modeOptions: Array<MediaFieldState["mode"]> = ["upload", "external", "library"];

export function MediaFieldPicker({
  title,
  value,
  onChange,
  options,
  inputName,
  fileFieldName,
  fileLabel,
  externalLabel,
  libraryLabel,
  accept,
}: MediaFieldPickerProps) {
  const filteredOptions = options.filter((option) => option.kind === value.kind);
  const selectedOption = filteredOptions.find((option) => option.id === value.assetId) ?? null;
  const previewUrl =
    value.mode === "library"
      ? selectedOption?.url ?? ""
      : value.mode === "external"
        ? value.url
        : "";

  return (
    <div className="space-y-3 rounded-surface border border-border p-4">
      <div className="space-y-2">
        <Label>{title}</Label>
        <div className="flex flex-wrap gap-2">
          {modeOptions.map((mode) => (
            <button
              key={mode}
              type="button"
              onClick={() =>
                onChange({
                  ...value,
                  mode,
                  assetId: mode === "library" ? value.assetId : "",
                  url: mode === "external" ? value.url : "",
                })
              }
              className={cn(
                "rounded-pill border px-4 py-2 text-sm transition-colors",
                value.mode === mode
                  ? "border-border-strong bg-foreground text-background"
                  : "border-border bg-background text-foreground/75 hover:border-border-strong hover:text-foreground",
              )}
            >
              {mode}
            </button>
          ))}
        </div>
      </div>

      <input
        type="hidden"
        name={inputName}
        value={JSON.stringify({
          mode: value.mode,
          assetId: value.assetId,
          url: value.url,
          label: value.label,
          kind: value.kind,
        })}
      />

      <div className="space-y-2">
        <Label>Label</Label>
        <Input
          value={value.label}
          onChange={(event) => onChange({ ...value, label: event.target.value })}
          placeholder="Homepage Hero"
        />
      </div>

      {value.mode === "upload" ? (
        <div className="space-y-2">
          <Label>{fileLabel ?? fileFieldName}</Label>
          <Input name={fileFieldName} type="file" accept={accept} />
        </div>
      ) : null}

      {value.mode === "external" ? (
        <div className="space-y-2">
          <Label>{externalLabel ?? "External URL"}</Label>
          <Input
            value={value.url}
            onChange={(event) => onChange({ ...value, url: event.target.value })}
            placeholder="https://example.com/image.jpg"
          />
        </div>
      ) : null}

      {value.mode === "library" ? (
        <div className="space-y-2">
          <Label>{libraryLabel ?? "Media Library"}</Label>
          <select
            value={value.assetId}
            onChange={(event) => onChange({ ...value, assetId: event.target.value })}
            className="flex h-11 w-full rounded-pill border border-border bg-background px-4 text-sm text-foreground shadow-sm"
          >
            <option value="">Select media</option>
            {filteredOptions.map((option) => (
              <option key={option.id} value={option.id}>
                {option.label}
              </option>
            ))}
          </select>
        </div>
      ) : null}

      {previewUrl ? (
        value.kind === "IMAGE" ? (
          <div className="overflow-hidden rounded-nested border border-border bg-surface-1">
            <img src={previewUrl} alt={value.label || title} className="h-40 w-full object-cover" />
          </div>
        ) : (
          <div className="rounded-nested border border-border bg-surface-1 px-4 py-3 text-sm text-muted-foreground">
            {previewUrl}
          </div>
        )
      ) : null}
    </div>
  );
}