// pages/main/journal-map/index.ts
import config from "../../../config/index";
import Time from "../../../utils/Time";
import { Journal, JournalPageType } from "../../../types/Journal";
import { MediaAttachExt, MediaAttachType } from "../../../types/Attachment";

interface MapMarker {
	id: number;
	latitude: number;
	longitude: number;
	width: number;
	height: number;
	customCallout: {
		anchorY: number;
		anchorX: number;
		display: string;
	};
}

interface JournalMarker {
	id: number;
	date: string;
	location?: string;
	lat: number;
	lng: number;
	idea?: string;
	items: Array<{
		type: number;
		thumbURL: string;
		sourceURL: string;
		mongoId: string;
	}>;
}

interface JournalMapData {
	centerLat: number;
	centerLng: number;
	scale: number;
	markers: MapMarker[];
	journals: JournalMarker[];
	customCalloutMarkerIds: number[];
	selectedMarker: JournalMarker | null;
	isLoading: boolean;
	detailHeight: number;
}

Page({
	data: <JournalMapData>{
		centerLat: 39.908823,
		centerLng: 116.397470,
		scale: 13,
		markers: [],
		journals: [],
		customCalloutMarkerIds: [],
		selectedMarker: null,
		isLoading: true,
		detailHeight: 0
	},
	async onLoad() {
		await this.loadJournals();
		// 获取窗口高度，固定详情面板为 1/2 高度
		const windowInfo = wx.getWindowInfo();
		const windowHeight = windowInfo.windowHeight;
		this.setData({
			detailHeight: windowHeight * 0.5
		});
	},
	/** 加载所有记录 */
	async loadJournals() {
		this.setData({ isLoading: true });
		try {
			const list: Journal[] = await new Promise((resolve, reject) => {
				wx.request({
					url: `${config.url}/journal/list`,
					method: "POST",
					header: {
						Key: wx.getStorageSync("key")
					},
					data: {
						page: 0,
						size: 9007199254740992,
						type: JournalPageType.PREVIEW
					},
					success: (resp: any) => {
						if (resp.data.code === 20000) {
							resolve(resp.data.data.list);
						} else {
							reject(new Error(resp.data.message || "加载失败"));
						}
					},
					fail: reject
				});
			}) || [];
			// 过滤有位置信息的记录
			const journals: JournalMarker[] = list
				.filter((journal: any) => journal.lat && journal.lng)
				.map((journal: any) => ({
					id: journal.id,
					date: Time.toPassedDateTime(journal.createdAt),
					location: journal.location,
					lat: journal.lat,
					lng: journal.lng,
					idea: journal.idea,
					items: journal.items.filter((item: any) => item.attachType === "THUMB")
						.map((item: any) => {
							const ext = JSON.parse(item.ext);
							return {
								type: ext.isVideo ? 1 : 0,
								thumbURL: `${config.url}/attachment/read/${item.mongoId}`,
								mongoId: item.mongoId,
								source: journal.items.find((source: any) => source.id === ext.sourceId)
							};
						})
				}));
			if (journals.length === 0) {
				wx.showToast({
					title: "暂无位置记录",
					icon: "none"
				});
				this.setData({ isLoading: false });
				return;
			}
			// 生成地图标记
			const markers: MapMarker[] = journals.map((journal) => ({
				id: journal.id,
				latitude: journal.lat,
				longitude: journal.lng,
				width: 24,
				height: 30,
				customCallout: {
					anchorY: -2,
					anchorX: 0,
					display: "ALWAYS"
				}
			}));

			// 所有标记的 ID 列表
			const customCalloutMarkerIds = journals.map((j) => j.id);
			// 计算中心点（所有标记的平均位置）
			const centerLat = journals.reduce((sum, j) => sum + j.lat, 0) / journals.length;
			const centerLng = journals.reduce((sum, j) => sum + j.lng, 0) / journals.length;

			this.setData({
				journals,
				markers,
				customCalloutMarkerIds,
				centerLat,
				centerLng,
				isLoading: false
			});
		} catch (err: any) {
			wx.showToast({
				title: err.message || "加载失败",
				icon: "error"
			});
			this.setData({ isLoading: false });
		}
	},
	/** 标记点击事件 */
	onMarkerTap(e: any) {
		const markerId = e.detail.markerId || e.markerId;
		this.loadMarkerDetail(markerId);
	},
	/** 气泡点击事件 */
	onCalloutTap(e: any) {
		const markerId = e.detail.markerId || e.markerId;
		this.loadMarkerDetail(markerId);
	},
	/** 加载标记详情 */
	async loadMarkerDetail(markerId: number) {
		wx.showLoading({ title: "加载中...", mask: true });
		try {
			const journal: any = await new Promise((resolve, reject) => {
				wx.request({
					url: `${config.url}/journal/${markerId}`,
					method: "POST",
					header: {
						Key: wx.getStorageSync("key")
					},
					success: (res: any) => {
						if (res.data.code === 20000) {
							resolve(res.data.data);
						} else {
							reject(new Error(res.data.message || "加载失败"));
						}
					},
					fail: reject
				});
			});

			const items = journal.items || [];
			const thumbItems = items.filter((item: any) => item.attachType === MediaAttachType.THUMB);
			const mediaItems = thumbItems.map((thumbItem: any) => {
				const ext = JSON.parse(thumbItem.ext) as MediaAttachExt;
				return {
					type: ext.isVideo ? 1 : 0,
					thumbURL: `${config.url}/attachment/read/${thumbItem.mongoId}`,
					sourceURL: `${config.url}/attachment/read/${ext.sourceMongoId}`,
					mongoId: thumbItem.mongoId,
				};
			});
			this.setData({
				selectedMarker: {
					id: journal.id,
					date: Time.toPassedDateTime(journal.createdAt),
					location: journal.location,
					lat: journal.lat,
					lng: journal.lng,
					idea: journal.idea,
					items: mediaItems
				}
			});
			wx.hideLoading();
		} catch (err: any) {
			wx.hideLoading();
			wx.showToast({
				title: err.message || "加载失败",
				icon: "error"
			});
		}
	},
	/** 关闭详情 */
	closeDetail() {
		this.setData({ selectedMarker: null });
	},
	/** 预览媒体 */
	previewMedia(e: WechatMiniprogram.BaseEvent) {
		const index = e.currentTarget.dataset.index;
		if (!this.data.selectedMarker) return;
		const sources = this.data.selectedMarker.items.map((item: any) => ({
			url: item.sourceURL,
			type: item.type === 0 ? "image" : "video"
		}));
		wx.previewMedia({
			current: index,
			sources: sources as WechatMiniprogram.MediaSource[]
		});
	},
});