"use client";

import { Camera, Check } from "lucide-react";

import {
  ResourceSelectField,
  ToggleRow,
} from "@/components/assistant-editor/editor-controls";
import { SectionCard } from "@/components/editor/section-card";
import { Textarea } from "@/components/ui/textarea";
import type { VisionPromptMode } from "@/lib/api";

type VisionModelOption = {
  value: string;
  label: string;
};

const promptModes: Array<{
  value: VisionPromptMode;
  title: string;
  description: string;
}> = [
  {
    value: "fixed",
    title: "固定提示词",
    description: "每次获取画面都发送同一个问题。",
  },
  {
    value: "runtime",
    title: "运行时自动生成",
    description: "模型结合当前对话，临时生成看图问题。",
  },
  {
    value: "guided",
    title: "固定提示词引导",
    description: "模型动态生成问题，同时遵守固定引导。",
  },
];

export function VisionConfigSection({
  description,
  hint,
  enabled,
  modelResourceId,
  promptMode,
  prompt,
  mainModelResourceId,
  mainModelSupportsImageInput,
  modelOptions,
  onEnabledChange,
  onModelResourceIdChange,
  onPromptModeChange,
  onPromptChange,
}: {
  description: string;
  hint: string;
  enabled: boolean;
  modelResourceId: string;
  promptMode: VisionPromptMode;
  prompt: string;
  mainModelResourceId: string;
  mainModelSupportsImageInput?: boolean;
  modelOptions: VisionModelOption[];
  onEnabledChange: (enabled: boolean) => void;
  onModelResourceIdChange: (modelResourceId: string) => void;
  onPromptModeChange: (promptMode: VisionPromptMode) => void;
  onPromptChange: (prompt: string) => void;
}) {
  const mainModelSupportsVision =
    mainModelSupportsImageInput ??
    modelOptions.some((option) => option.value === mainModelResourceId);
  const independentModelOptions = modelOptions.filter(
    (option) => option.value !== mainModelResourceId,
  );

  return (
    <SectionCard
      icon={<Camera size={15} />}
      title="视觉理解"
      description={description}
    >
      <ToggleRow
        title="允许理解当前画面"
        hint={hint}
        checked={enabled}
        onChange={onEnabledChange}
      />
      {enabled && (
        <>
          <ResourceSelectField
            label="视觉模型"
            value={modelResourceId}
            onChange={onModelResourceIdChange}
            options={independentModelOptions}
            noneLabel="模型自己"
          />
          {!modelResourceId && !mainModelSupportsVision && (
            <p className="text-xs text-destructive">
              当前模型未标记支持图片输入，请选择独立视觉模型。
            </p>
          )}
          <div className="space-y-2">
            <label className="text-sm font-medium text-foreground">
              看图问题生成方式
            </label>
            <div role="radiogroup" aria-label="看图问题生成方式" className="space-y-2">
              {promptModes.map((option) => {
                const selected = promptMode === option.value;
                return (
                  <button
                    key={option.value}
                    type="button"
                    role="radio"
                    aria-checked={selected}
                    onClick={() => onPromptModeChange(option.value)}
                    className={[
                      "flex w-full items-start gap-3 rounded-xl border px-3.5 py-3 text-left transition-colors",
                      selected
                        ? "border-primary bg-surface-strong/70 ring-1 ring-primary"
                        : "border-hairline bg-background hover:border-hairline-strong",
                    ].join(" ")}
                  >
                    <span
                      className={[
                        "mt-0.5 flex h-5 w-5 shrink-0 items-center justify-center rounded-full border",
                        selected
                          ? "border-primary bg-primary text-primary-foreground"
                          : "border-hairline-strong text-transparent",
                      ].join(" ")}
                    >
                      <Check size={12} />
                    </span>
                    <span className="min-w-0">
                      <span className="block text-sm font-medium text-foreground">
                        {option.title}
                      </span>
                      <span className="mt-0.5 block text-xs leading-5 text-muted-foreground">
                        {option.description}
                      </span>
                    </span>
                  </button>
                );
              })}
            </div>
          </div>
          {promptMode !== "runtime" && (
            <div className="space-y-1.5">
              <label className="text-sm font-medium text-foreground">
                {promptMode === "fixed" ? "固定视觉提示词" : "运行时提示词引导"}
              </label>
              <Textarea
                value={prompt}
                maxLength={4000}
                rows={5}
                onChange={(event) => onPromptChange(event.target.value)}
                placeholder={
                  promptMode === "fixed"
                    ? "例如：请识别画面中的车辆数量、碰撞位置、明显损伤和人员状态。"
                    : "例如：问题应聚焦车辆数量、碰撞位置和人员状态；只询问画面中可直接判断的信息。"
                }
                className="field-sizing-fixed min-h-28 resize-y border-hairline-strong bg-background text-sm leading-6 text-foreground placeholder:text-muted-soft"
              />
              <p className="text-[11px] leading-5 text-muted-soft">
                {promptMode === "fixed"
                  ? "工具调用时不会让模型改写这段内容。"
                  : "模型会结合当前对话生成具体问题，并受到这段内容约束。"}
              </p>
              {!prompt.trim() && (
                <p className="text-xs leading-5 text-destructive">
                  当前模式需要填写提示词后才能保存。
                </p>
              )}
            </div>
          )}
        </>
      )}
    </SectionCard>
  );
}