import {
  buildAgentToolImageMarkdown,
  buildAgentToolImagesMarkdown,
  buildAgentToolVideoMarkdown,
  prependImageModelBadge,
} from "@/lib/ai/runtime/agent-media-markdown";
import {
  getDirectAgentToolDisplayName,
  getDirectAgentToolSuccessMessage,
  type DirectAgentToolCapability,
} from "@/lib/ai/runtime/direct-agent-execution";

function normalizeDirectAgentResultSentence(value: string) {
  const normalized = String(value || "")
    .replace(/结果如下[：:]?\s*$/u, "")
    .replace(/[，,。:：]\s*$/u, "")
    .trim();
  return normalized || "已完成处理";
}

function buildDirectAgentResultCard(params: {
  result: string;
  mediaMarkdown?: string | null;
  followUp: string;
}) {
  return [
    "### 执行结果",
    `- ${normalizeDirectAgentResultSentence(params.result)}，结果如下。`,
    params.mediaMarkdown,
    "### 后续操作",
    `- ${params.followUp}`,
  ]
    .filter(Boolean)
    .join("\n\n");
}

function getDirectAgentFollowUpMessage(capability: DirectAgentToolCapability) {
  switch (capability) {
    case "remove_background":
      return "如需微调边缘、替换背景或继续合成，可以直接告诉我。";
    case "remove_watermark":
      return "如需继续修补局部痕迹或统一画面质感，可以直接告诉我。";
    case "enhance":
      return "如需继续调整清晰度、色彩或细节强度，可以直接告诉我。";
    case "resize":
      return "如需继续改尺寸、比例或输出规格，可以直接告诉我。";
    case "extend":
      return "如需继续扩展画面、调整构图或补充边缘内容，可以直接告诉我。";
    case "angle_variant":
      return "如需继续换角度、换机位或统一系列视角，可以直接告诉我。";
    case "local_edit":
    case "box_cutout":
      return "如需继续修改局部、替换元素或细化边缘，可以直接告诉我。";
    case "generate_video":
      return "如需继续调整镜头、节奏、比例或时长，可以直接告诉我。";
    case "generate_image":
    case "generic_edit":
    default:
      return "如需继续调整风格、构图、主体细节或尺寸，可以直接告诉我。";
  }
}

export function buildDirectAgentAnalysisAssistantText(params: {
  summary: string;
  answer?: string | null;
}) {
  const answer = String(params.answer || "").trim();
  return prependImageModelBadge(
    [
      getDirectAgentToolSuccessMessage("analyze"),
      `图像观察：\n${String(params.summary || "").trim()}`,
      answer ? `分析结论：\n${answer}` : "",
    ]
      .filter(Boolean)
      .join("\n\n"),
    getDirectAgentToolDisplayName("analyze"),
  );
}

export function buildDirectAgentImageGenerationAssistantText(params: {
  imageMarkdown: string;
  modelDisplayName?: string | null;
}) {
  return prependImageModelBadge(
    buildDirectAgentResultCard({
      result: getDirectAgentToolSuccessMessage("generate_image"),
      mediaMarkdown: params.imageMarkdown,
      followUp: getDirectAgentFollowUpMessage("generate_image"),
    }),
    params.modelDisplayName,
  );
}

export function buildDirectAgentVideoGenerationAssistantText(params: {
  videoUrl: string;
  modelDisplayName?: string | null;
}) {
  return prependImageModelBadge(
    buildDirectAgentResultCard({
      result: getDirectAgentToolSuccessMessage("generate_video"),
      mediaMarkdown: buildAgentToolVideoMarkdown(params.videoUrl),
      followUp: getDirectAgentFollowUpMessage("generate_video"),
    }),
    params.modelDisplayName,
  );
}

export function buildDirectAgentImageEditAssistantText(params: {
  capability: DirectAgentToolCapability;
  originalUrl: string;
  thumbnailUrl?: string | null;
  imageSize?: string;
}) {
  return prependImageModelBadge(
    buildDirectAgentResultCard({
      result: getDirectAgentToolSuccessMessage(params.capability),
      mediaMarkdown: buildAgentToolImageMarkdown({
        originalUrl: params.originalUrl,
        thumbnailUrl: params.thumbnailUrl,
        imageSize: params.imageSize,
      }),
      followUp: getDirectAgentFollowUpMessage(params.capability),
    }),
    getDirectAgentToolDisplayName(params.capability),
  );
}

export function buildDirectAgentBatchImageEditAssistantText(params: {
  capability: DirectAgentToolCapability;
  results: Array<{
    originalUrl: string;
    thumbnailUrl?: string | null;
    imageSize?: string;
  }>;
}) {
  return prependImageModelBadge(
    buildDirectAgentResultCard({
      result: getDirectAgentToolSuccessMessage(params.capability),
      mediaMarkdown: buildAgentToolImagesMarkdown(params.results),
      followUp: getDirectAgentFollowUpMessage(params.capability),
    }),
    getDirectAgentToolDisplayName(params.capability),
  );
}