import { App as AntApp, Button, Form, Input, Modal, Select, Space } from "antd";
import { useEffect, useState } from "react";

import type {
  CreateProviderRequest,
  Provider,
  ProviderTestResponse,
  ProviderType,
  UpdateProviderRequest,
} from "../../../../shared/api";

interface FormValues {
  apiKey: string;
  baseUrl: string;
  name: string;
  type: ProviderType;
}

interface ProviderFormModalProps {
  editingProvider: null | Provider;
  onCancel: () => void;
  onCreate: (data: CreateProviderRequest) => Promise<unknown>;
  onOpenChange: (open: boolean) => void;
  onTest: (data: CreateProviderRequest) => Promise<ProviderTestResponse>;
  onUpdate: (args: { data: UpdateProviderRequest; id: string }) => Promise<unknown>;
  open: boolean;
  submitting: boolean;
}

const TYPE_OPTIONS = [
  { label: "OpenAI 兼容", value: "openai-compatible" },
  { label: "OpenAI", value: "openai" },
  { label: "Anthropic", value: "anthropic" },
];

export function ProviderFormModal({
  editingProvider,
  onCancel,
  onCreate,
  onOpenChange,
  onTest,
  onUpdate,
  open,
  submitting,
}: ProviderFormModalProps) {
  const { message } = AntApp.useApp();
  const [form] = Form.useForm<FormValues>();
  const [testing, setTesting] = useState(false);

  useEffect(() => {
    if (!open) return;
    if (editingProvider) {
      form.setFieldsValue({
        apiKey: editingProvider.apiKey,
        baseUrl: editingProvider.baseUrl,
        name: editingProvider.name,
        type: editingProvider.type,
      });
    } else {
      form.resetFields();
      form.setFieldsValue({ type: "openai-compatible" });
    }
  }, [editingProvider, form, open]);

  const handleFinish = async (values: FormValues) => {
    try {
      if (editingProvider) {
        const reqData: UpdateProviderRequest = {};
        if (values.name !== editingProvider.name) reqData.name = values.name;
        if (values.baseUrl !== editingProvider.baseUrl) reqData.baseUrl = values.baseUrl;
        if (values.apiKey !== editingProvider.apiKey) reqData.apiKey = values.apiKey;
        if (values.type !== editingProvider.type) reqData.type = values.type;
        await onUpdate({ data: reqData, id: editingProvider.id });
        message.success("供应商已更新");
      } else {
        const reqData: CreateProviderRequest = {
          apiKey: values.apiKey,
          baseUrl: values.baseUrl,
          name: values.name,
          type: values.type,
        };
        await onCreate(reqData);
        message.success("供应商已创建");
      }
      onOpenChange(false);
    } catch (err) {
      if (err instanceof Error) {
        message.error(err.message);
      }
    }
  };

  const handleTest = async () => {
    try {
      const values = await form.validateFields(["name", "type", "baseUrl", "apiKey"]);
      setTesting(true);
      const result = await onTest({
        apiKey: values.apiKey,
        baseUrl: values.baseUrl,
        name: values.name,
        type: values.type,
      });
      if (result.ok) {
        message.success(result.message);
      } else {
        message.error(result.message);
      }
    } catch (err) {
      if (err instanceof Error) {
        message.error(err.message);
      }
    } finally {
      setTesting(false);
    }
  };

  return (
    <Modal
      confirmLoading={submitting}
      destroyOnHidden
      okText="确定"
      onCancel={onCancel}
      onOk={() => void form.submit()}
      open={open}
      title={editingProvider ? "编辑供应商" : "新建供应商"}
    >
      <Form form={form} layout="vertical" onFinish={(values) => void handleFinish(values)}>
        <Form.Item
          label="供应商名称"
          name="name"
          rules={[{ message: "请输入供应商名称", required: true, whitespace: true }]}
        >
          <Input placeholder="请输入供应商名称" />
        </Form.Item>
        <Form.Item label="供应商类型" name="type" rules={[{ message: "请选择供应商类型", required: true }]}>
          <Select options={TYPE_OPTIONS} placeholder="请选择供应商类型" />
        </Form.Item>
        <Form.Item label="Base URL" name="baseUrl" rules={[{ message: "请输入 Base URL", required: true }]}>
          <Input placeholder="https://api.openai.com/v1" />
        </Form.Item>
        <Form.Item label="API Key" name="apiKey" rules={[{ message: "请输入 API Key", required: true }]}>
          <Input.Password placeholder="请输入 API Key" />
        </Form.Item>
        <Form.Item>
          <Space>
            <Button loading={testing} onClick={() => void handleTest()}>
              测试连接
            </Button>
          </Space>
        </Form.Item>
      </Form>
    </Modal>
  );
}