<template>
	<div class="sidebar">
		<div class="sidebar-header">
			<el-button class="new-chat-btn" @click="handleNewChat">
				<el-icon>
					<Plus />
				</el-icon>
				新增对话
			</el-button>
		</div>

		<div v-if="historyList.length" class="history-section">
			<div class="history-title">历史对话</div>
			<div class="history-list">
				<div
					v-for="item in historyList"
					:key="item.id"
					class="history-item"
					:class="{ active: activeHistoryId === item.id }"
					@click="handleSelectHistory(item.id)"
				>
					<div class="history-main">
						<div class="history-name">{{ item.title }}</div>
						<div class="history-time">{{ item.time }}</div>
					</div>
					<el-button text class="delete-btn" @click.stop="handleDeleteHistory(item.id)">
						<el-icon>
							<Delete />
						</el-icon>
					</el-button>
				</div>
			</div>
		</div>
	</div>
</template>

<script setup lang="ts">
import { Plus, Delete } from '@element-plus/icons-vue';

interface HistoryItem {
	id: number;
	title: string;
	time: string;
}

interface Props {
	activeMenu: string;
	activeHistoryId: number;
	historyList: HistoryItem[];
}

interface Emits {
	(e: 'menu-change', key: string): void;
	(e: 'new-chat'): void;
	(e: 'select-history', id: number): void;
	(e: 'delete-history', id: number): void;
}

defineProps<Props>();
const emit = defineEmits<Emits>();

const handleNewChat = () => {
	emit('new-chat');
};

const handleSelectHistory = (id: number) => {
	emit('select-history', id);
};

const handleDeleteHistory = (id: number) => {
	emit('delete-history', id);
};
</script>

<style scoped lang="scss">
.sidebar {
	width: 252px;
	background: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(249, 251, 255, 0.92) 100%);
	border-right: 1px solid #e7edf7;
	display: flex;
	flex-direction: column;
	height: 100%;
	box-shadow: 8px 0 30px rgba(15, 23, 42, 0.06);
	backdrop-filter: blur(10px);
}

.sidebar-header {
	padding: 18px 16px 14px;
	border-bottom: 1px solid #e9eef7;
	position: relative;
}

.new-chat-btn {
	margin-top: 0;
	width: 100%;
	height: 40px;
	border-radius: 12px;
	border: 1px solid rgba(59, 130, 246, 0.28);
	background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
	color: #ffffff;
	font-weight: 600;
	letter-spacing: 0.2px;
	box-shadow: 0 4px 12px rgba(37, 99, 235, 0.26);
	transition: all 0.2s ease;

	&:hover {
		transform: translateY(-1px);
		color: #ffffff;
		border-color: rgba(59, 130, 246, 0.4);
		background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%);
		box-shadow: 0 6px 16px rgba(37, 99, 235, 0.32);
	}
}

.history-section {
	flex: 1;
	display: flex;
	flex-direction: column;
	margin-top: 8px;
	min-height: 0;
	background: linear-gradient(180deg, rgba(249, 251, 255, 0.5) 0%, rgba(249, 251, 255, 0.9) 100%);
}

.history-title {
	padding: 12px 12px 8px;
	font-size: 11px;
	font-weight: 600;
	color: #64748b;
	text-transform: uppercase;
	letter-spacing: 0.8px;
}

.history-list {
	flex: 1;
	padding: 0 8px 10px;
	overflow-y: auto;
	scrollbar-width: none;
	-ms-overflow-style: none;

	&::-webkit-scrollbar {
		display: none;
	}
}

.history-item {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 8px;
	padding: 10px 10px;
	margin-bottom: 6px;
	border-radius: 10px;
	border: 1px solid transparent;
	cursor: pointer;
	transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
	background: rgba(255, 255, 255, 0.6);

	&:hover {
		border-color: #bfdbfe;
		background: linear-gradient(135deg, rgba(239, 246, 255, 0.9) 0%, rgba(219, 234, 254, 0.7) 100%);
		transform: translateX(2px);
	}

	&.active {
		border-color: #3b82f6;
		background: linear-gradient(135deg, rgba(59, 130, 246, 0.12) 0%, rgba(59, 130, 246, 0.04) 100%);
		box-shadow: 0 2px 8px rgba(59, 130, 246, 0.15);
	}

	.delete-btn {
		opacity: 0;
		color: #94a3b8;
		transition: all 0.2s ease;
		padding: 4px;

		&:hover {
			color: #ef4444;
			background: rgba(239, 68, 68, 0.1);
			border-radius: 4px;
		}
	}

	&:hover .delete-btn {
		opacity: 1;
	}
}

.history-main {
	min-width: 0;
	flex: 1;
}

.history-name {
	font-size: 12px;
	font-weight: 500;
	color: #1e293b;
	white-space: nowrap;
	overflow: hidden;
	text-overflow: ellipsis;
	margin-bottom: 2px;
}

.history-time {
	font-size: 11px;
	color: #94a3b8;
}
</style>
