import type { KeyboardEvent } from "react";
import { Icon } from "./Icon";

type Props = {
  value: string;
  onChange: (v: string) => void;
  onSend: () => void | Promise<void>;
  /** Smaller padding when used inside overlay */
  compact?: boolean;
};

export function MainChatComposer({
  value,
  onChange,
  onSend,
  compact,
}: Props) {
  const handleKeyDown = (e: KeyboardEvent<HTMLTextAreaElement>) => {
    if (e.key === "Enter" && !e.shiftKey) {
      e.preventDefault();
      onSend();
    }
  };

  return (
    <div
      className={`w-full max-w-5xl mx-auto ${compact ? "" : "px-1"}`}
    >
      <div className="relative rounded-2xl border border-outline-variant bg-white p-2 shadow-md transition-all focus-within:border-primary focus-within:ring-2 focus-within:ring-primary/10">
        <textarea
          className={`w-full resize-none border-none bg-transparent font-body-md text-body-md text-on-background placeholder:text-secondary/70 focus:ring-0 ${
            compact ? "min-h-[100px] p-3" : "min-h-[120px] p-4"
          }`}
          placeholder="Describe your procurement needs (e.g., 'Source 500 units of high-performance laptops for the engineering team...')"
          value={value}
          onChange={(e) => onChange(e.target.value)}
          onKeyDown={handleKeyDown}
          rows={compact ? 4 : 5}
          aria-label="Procurement request"
        />
        <div className="mx-2 border-t border-outline-variant" />
        <div className="flex items-center justify-between px-2 pb-2 pt-2">
          <div className="flex items-center gap-0.5">
            <button
              type="button"
              className="rounded-full p-2.5 text-secondary transition-colors hover:bg-surface-container-high"
              title="Attach file"
              aria-label="Attach file"
            >
              <Icon name="attach_file" className="text-[22px]" />
            </button>
            <button
              type="button"
              className="rounded-full p-2.5 text-secondary transition-colors hover:bg-surface-container-high"
              title="Add images"
              aria-label="Add images"
            >
              <Icon name="photo_library" className="text-[22px]" />
            </button>
            <button
              type="button"
              className="rounded-full p-2.5 text-secondary transition-colors hover:bg-surface-container-high"
              title="Voice input"
              aria-label="Voice input"
            >
              <Icon name="mic" className="text-[22px]" />
            </button>
          </div>
          <button
            type="button"
            onClick={onSend}
            className="flex items-center gap-2 rounded-xl bg-primary px-5 py-2.5 font-body-md text-sm font-bold text-on-primary shadow-sm transition-all hover:opacity-95 active:scale-[0.98]"
          >
            Send Request
            <Icon name="send" className="text-lg" />
          </button>
        </div>
      </div>
      {!compact && (
        <p className="mt-4 text-center font-body-sm text-xs text-secondary/60">
          Procure AI can make mistakes. Check important procurement details
          before approval.
        </p>
      )}
    </div>
  );
}