<template>
	<div class="editor-container">
		<div ref="editorToolbar"></div>
		<div ref="editorContent" :style="{ height }"></div>
	</div>
</template>

<script lang="ts">
import { toRefs, reactive, onMounted, watch, defineComponent, onUnmounted, nextTick } from 'vue';
import { createEditor, createToolbar, IEditorConfig, IToolbarConfig, IDomEditor } from '@wangeditor/editor';
import '@wangeditor/editor/dist/css/style.css';
import { toolbarKeys } from './toolbar';

// 定义接口来定义对象的类型
interface WangeditorState {
	editorToolbar: HTMLDivElement | null;
	editorContent: HTMLDivElement | null;
	editor: IDomEditor | null;
	isInitialized: boolean;
}

export default defineComponent({
	name: 'wngEditor',
	props: {
		// 节点 id
		id: {
			type: String,
			default: () => 'wangeditor',
		},
		// 是否禁用
		isDisable: {
			type: Boolean,
			default: () => false,
		},
		// 内容框默认 placeholder
		placeholder: {
			type: String,
			default: () => '请输入内容',
		},
		// 双向绑定：双向绑定值，字段名为固定，改了之后将不生效
		modelValue: String,
		// 模式，可选 <default|simple>，默认 default
		mode: {
			type: String,
			default: () => 'default',
		},
		// 高度
		height: {
			type: String,
			default: () => '310px',
		},
	},
	setup(props, { emit }) {
		const state = reactive<WangeditorState>({
			editorToolbar: null,
			editor: null,
			editorContent: null,
			isInitialized: false,
		});

		// 富文本配置
		const wangeditorConfig = (): Partial<IEditorConfig> => {
			const editorConfig: Partial<IEditorConfig> = {
				MENU_CONF: {},
				readOnly: props.isDisable,
				placeholder: props.placeholder,
			};

			editorConfig.onChange = (editor: IDomEditor) => {
				emit('update:modelValue', editor.getHtml());
			};

			(<any>editorConfig).MENU_CONF['uploadImage'] = {
				base64LimitSize: 10 * 1024 * 1024,
			};

			return editorConfig;
		};

		const toolbarConfig = (): Partial<IToolbarConfig> => {
			return {
				toolbarKeys: toolbarKeys,
			};
		};

		// 销毁编辑器
		const destroyEditor = () => {
			if (state.editor) {
				state.editor.destroy();
				state.editor = null;
				state.isInitialized = false;
			}
		};

		// 初始化富文本
		const initWangeditor = () => {
			// 先销毁旧的编辑器
			destroyEditor();

			nextTick(() => {
				if (!state.editorContent) return;

				state.editor = createEditor({
					html: props.modelValue || '',
					selector: state.editorContent,
					config: wangeditorConfig(),
					mode: props.mode,
				});

				createToolbar({
					editor: state.editor,
					selector: state.editorToolbar!,
					mode: props.mode,
					config: toolbarConfig(),
				});

				state.isInitialized = true;
			});
		};

		// 页面加载时
		onMounted(() => {
			initWangeditor();
		});

		// 组件卸载时销毁编辑器
		onUnmounted(() => {
			destroyEditor();
		});

		// 监听双向绑定值的改变
		watch(
			() => props.modelValue,
			(value) => {
				if (state.editor && state.isInitialized) {
					// 只有当内容确实改变时才更新
					const currentHtml = state.editor.getHtml();
					if (currentHtml !== value) {
						state.editor.setHtml(value || '');
					}
				}
			}
		);

		// 监听禁用状态变化
		watch(
			() => props.isDisable,
			(disabled) => {
				if (state.editor) {
					state.editor.setDisabled(disabled);
				}
			}
		);

		return {
			...toRefs(state),
		};
	},
});
</script>
