feat: 更新视频播放器组件，添加章节视频功能并优化返回逻辑

components/nav-bar/nav-bar.vue

@@ -15,8 +15,9 @@
 
 <script setup>
 import { getStatusBarHeight, getTitleBarHeight, getNavBarHeight } from "@/utils/system"
+import { BEFORE_NAVIGATE_BACK_EVENT } from "./back-events"
 
-defineProps({
+const props = defineProps({
 	title:{
 		type:String,
 		default:""
@@ -24,11 +25,31 @@ defineProps({
 	leftArrow:{
 		type:Boolean,
 		default:true
+	},
+	autoBack: {
+		type: Boolean,
+		default: true
+	},
+	safeBack: {
+		type: Boolean,
+		default: false
 	}
 })
 
+const emit = defineEmits(['click-left'])
+
 const handleClickLeft = () => {
-	uni.navigateBack()
+	emit('click-left')
+	if (props.safeBack) {
+		uni.$emit(BEFORE_NAVIGATE_BACK_EVENT)
+		setTimeout(() => {
+			uni.navigateBack()
+		}, 80)
+		return
+	}
+	if (props.autoBack) {
+		uni.navigateBack()
+	}
 }
 </script>