import React, { useState, useEffect } from "react";
import {
    Modal,
    Form,
    Input,
    Select,
    Space,
    message,
} from "antd";
import {
    createAnnotationTemplateUsingPost,
    updateAnnotationTemplateByIdUsingPut,
} from "../annotation.api";
import type { AnnotationTemplate } from "../annotation.model";
import { DataTypeMap, ClassificationMap, AnnotationTypeMap } from "../annotation.const";
import TemplateConfigurationTreeEditor from "../components/TemplateConfigurationTreeEditor";

const { TextArea } = Input;
const { Option } = Select;

interface TemplateFormProps {
    visible: boolean;
    mode: "create" | "edit";
    template?: AnnotationTemplate;
    onSuccess: () => void;
    onCancel: () => void;
}

const TemplateForm: React.FC<TemplateFormProps> = ({
    visible,
    mode,
    template,
    onSuccess,
    onCancel,
}) => {
    const [form] = Form.useForm();
    const [loading, setLoading] = useState(false);
    const [labelConfig, setLabelConfig] = useState("");
    const selectedDataType = Form.useWatch("dataType", form);

    useEffect(() => {
        if (visible && template && mode === "edit") {
            form.setFieldsValue({
                name: template.name,
                description: template.description,
                dataType: template.dataType,
                labelingType: template.labelingType,
                style: template.style,
                category: template.category,
            });
            setLabelConfig(template.labelConfig || "");
        } else if (visible && mode === "create") {
            form.resetFields();
            // Set default values
            form.setFieldsValue({
                style: "horizontal",
                category: "custom",
            });
            setLabelConfig("");
        }
    }, [visible, template, mode, form]);

    const handleSubmit = async () => {
        try {
            const values = await form.validateFields();
            if (!labelConfig.trim()) {
                message.error("请配置标注模板");
                return;
            }
            setLoading(true);

            console.log("Form values:", values);

            const requestData = {
                name: values.name,
                description: values.description,
                dataType: values.dataType,
                labelingType: values.labelingType,
                style: values.style,
                category: values.category,
                labelConfig: labelConfig.trim(),
            };

            console.log("Request data:", requestData);

            let response;
            if (mode === "create") {
                response = await createAnnotationTemplateUsingPost(requestData);
            } else {
                response = await updateAnnotationTemplateByIdUsingPut(template!.id, requestData);
            }

            if (response.code === 200) {
                message.success(`模板${mode === "create" ? "创建" : "更新"}成功`);
                form.resetFields();
                onSuccess();
            } else {
                message.error(response.message || `模板${mode === "create" ? "创建" : "更新"}失败`);
            }
        } catch (error: unknown) {
            const hasErrorFields =
                typeof error === "object" &&
                error !== null &&
                "errorFields" in error;
            if (hasErrorFields) {
                message.error("请填写所有必填字段");
            } else {
                message.error(`模板${mode === "create" ? "创建" : "更新"}失败`);
                console.error(error);
            }
        } finally {
            setLoading(false);
        }
    };

    return (
        <Modal
            title={mode === "create" ? "创建模板" : "编辑模板"}
            open={visible}
            onCancel={onCancel}
            onOk={handleSubmit}
            confirmLoading={loading}
            width={900}
            destroyOnClose
        >
            <Form
                form={form}
                layout="vertical"
                style={{ maxHeight: "70vh", overflowY: "auto", paddingRight: 8 }}
            >
                <Form.Item
                    label="模板名称"
                    name="name"
                    rules={[{ required: true, message: "请输入模板名称" }]}
                >
                    <Input placeholder="例如：产品质量分类" maxLength={100} />
                </Form.Item>

                <Form.Item label="描述" name="description">
                    <TextArea
                        placeholder="描述此模板的用途"
                        rows={2}
                        maxLength={500}
                    />
                </Form.Item>

                <Space style={{ width: "100%" }} size="large" wrap>
                    <Form.Item
                        label="数据类型"
                        name="dataType"
                        rules={[{ required: true, message: "请选择数据类型" }]}
                        style={{ width: 200 }}
                    >
                        <Select placeholder="选择数据类型">
                            {Object.entries(DataTypeMap).map(([key, item]) => (
                                <Option key={key} value={item.value}>{item.label}</Option>
                            ))}
                        </Select>
                    </Form.Item>

                    <Form.Item
                        label="标注类型"
                        name="labelingType"
                        rules={[{ required: true, message: "请选择标注类型" }]}
                        style={{ width: 220 }}
                    >
                        <Select placeholder="选择标注类型" showSearch optionFilterProp="children">
                            {Object.entries(AnnotationTypeMap).map(([key, item]) => (
                                <Option key={key} value={item.value}>{item.label}</Option>
                            ))}
                        </Select>
                    </Form.Item>

                    <Form.Item
                        label="样式"
                        name="style"
                        style={{ width: 150 }}
                    >
                        <Select>
                            <Option value="horizontal">水平</Option>
                            <Option value="vertical">垂直</Option>
                        </Select>
                    </Form.Item>

                    <Form.Item
                        label="分类"
                        name="category"
                        style={{ width: 180 }}
                    >
                        <Select showSearch optionFilterProp="children">
                            {Object.entries(ClassificationMap).map(([key, item]) => (
                                <Option key={key} value={item.value}>{item.label}</Option>
                            ))}
                        </Select>
                    </Form.Item>
                </Space>

                <div className="bg-gray-50 p-4 rounded-md border border-gray-200">
                    <TemplateConfigurationTreeEditor
                        value={labelConfig}
                        onChange={setLabelConfig}
                        height={420}
                        dataType={selectedDataType}
                    />
                </div>
            </Form>
        </Modal>
    );
};

export default TemplateForm;
