import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";

import type {
  CreateModelRequest,
  Model,
  ModelListResponse,
  ModelResponse,
  ModelTestResponse,
  ModelTestResultResponse,
  TestModelRequest,
  UpdateModelRequest,
} from "../../../shared/api";

import { handleResponse, handleVoidResponse } from "../utils/api";
import { createConsoleLogger } from "../utils/logger";

const MODELS_KEY = ["models"] as const;
const logger = createConsoleLogger();

export async function createModel(data: CreateModelRequest): Promise<Model> {
  const response = await fetch("/api/models", {
    body: JSON.stringify(data),
    headers: { "Content-Type": "application/json" },
    method: "POST",
  });
  return handleResponse(response, (data) => (data as ModelResponse).model);
}

export async function deleteModel(id: string): Promise<void> {
  const response = await fetch(`/api/models/${id}`, { method: "DELETE" });
  return handleVoidResponse(response);
}

export async function fetchModel(id: string): Promise<Model> {
  const response = await fetch(`/api/models/${id}`);
  return handleResponse(response, (data) => (data as ModelResponse).model);
}

export async function fetchModelList(params: {
  capabilities?: string;
  keyword?: string;
  page?: number;
  pageSize?: number;
  providerId?: string;
  sortBy?: string;
  sortOrder?: string;
}): Promise<ModelListResponse> {
  const searchParams = new URLSearchParams();
  if (params.page) searchParams.set("page", String(params.page));
  if (params.pageSize) searchParams.set("pageSize", String(params.pageSize));
  if (params.keyword) searchParams.set("keyword", params.keyword);
  if (params.providerId) searchParams.set("providerId", params.providerId);
  if (params.sortBy) searchParams.set("sortBy", params.sortBy);
  if (params.sortOrder) searchParams.set("sortOrder", params.sortOrder);
  if (params.capabilities) searchParams.set("capabilities", params.capabilities);
  const qs = searchParams.toString();
  const url = `/api/models${qs ? `?${qs}` : ""}`;
  const response = await fetch(url);
  if (!response.ok) {
    const body = (await response.json().catch(() => null)) as null | { error?: string };
    throw new Error(body?.error ?? `HTTP ${response.status}`);
  }
  return response.json() as Promise<ModelListResponse>;
}

export async function testModelConnection(data: TestModelRequest): Promise<ModelTestResponse> {
  const response = await fetch("/api/models/test", {
    body: JSON.stringify(data),
    headers: { "Content-Type": "application/json" },
    method: "POST",
  });
  if (!response.ok) {
    const body = (await response.json().catch(() => null)) as null | { error?: string };
    throw new Error(body?.error ?? `HTTP ${response.status}`);
  }
  const result = (await response.json()) as ModelTestResultResponse;
  return result.modelTestResponse;
}

export async function updateModel(id: string, data: UpdateModelRequest): Promise<Model> {
  const response = await fetch(`/api/models/${id}`, {
    body: JSON.stringify(data),
    headers: { "Content-Type": "application/json" },
    method: "PATCH",
  });
  return handleResponse(response, (data) => (data as ModelResponse).model);
}

export function useCreateModel() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: createModel,
    onSuccess: (data) => {
      logger.info("模型创建成功", { externalId: data.externalId, providerId: data.providerId });
      void queryClient.invalidateQueries({ queryKey: MODELS_KEY });
    },
  });
}

export function useDeleteModel() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: deleteModel,
    onSuccess: (_data, variables) => {
      logger.info("模型删除成功", { modelId: variables });
      void queryClient.invalidateQueries({ queryKey: MODELS_KEY });
    },
  });
}

export function useModel(id: string) {
  return useQuery({
    enabled: !!id,
    queryFn: () => fetchModel(id),
    queryKey: [...MODELS_KEY, "detail", id],
  });
}

export function useModelList(params: {
  capabilities?: string;
  keyword?: string;
  page?: number;
  pageSize?: number;
  providerId?: string;
  sortBy?: string;
  sortOrder?: string;
}) {
  return useQuery({
    queryFn: () => fetchModelList(params),
    queryKey: [...MODELS_KEY, "list", params],
  });
}

export function useTestModelConnection() {
  return useMutation({
    mutationFn: testModelConnection,
  });
}

export function useUpdateModel() {
  const queryClient = useQueryClient();
  return useMutation({
    mutationFn: (args: { data: UpdateModelRequest; id: string }) => updateModel(args.id, args.data),
    onSuccess: (data) => {
      logger.info("模型更新成功", { externalId: data.externalId, providerId: data.providerId });
      void queryClient.invalidateQueries({ queryKey: MODELS_KEY });
    },
  });
}