package web

import "strings"

// 地点补全的判定规则：地名怎么猜活动、高德 POI 类型怎么猜活动和类别。
//
// 两条原则：
//   - **只填空**：调用方只在原值为空时才用这里的建议；
//   - **拿不准就别猜**：宁可标成「待确认」让人看一眼，也不要瞎填一个看起来像样的值，
//     错的活动会直接污染统计与筛选，比空着更难发现。
//
// 词表按**定义顺序**匹配，先命中的赢——所以具体的词要排在笼统的词前面。

// actHint 是一条「关键词 → 活动类型」的映射，关键词出现在地名里就算命中。
type actHint struct{ kw, val string }

// nameActHints 从地名猜活动。活动名必须与站点里已有的 31 个完全一致，
// 否则调用方会把它当成「需要新建的类型」。
var nameActHints = []actHint{
	{"咖啡", "奶茶和甜甜水"}, {"奶茶", "奶茶和甜甜水"}, {"茶艺", "奶茶和甜甜水"},
	{"书店", "学习"}, {"图书馆", "学习"}, {"学校", "学习"}, {"大学", "学习"},
	{"博物馆", "纪念馆"}, {"纪念馆", "纪念馆"}, {"陈列馆", "纪念馆"},
	{"动物园", "动物园"}, {"海洋馆", "动物园"},
	{"沙滩", "沙滩"}, {"海滨", "沙滩"}, {"海滩", "沙滩"},
	{"度假区", "旅游景点"}, {"古镇", "旅游景点"}, {"景区", "旅游景点"},
	{"游客中心", "旅游景点"}, {"索道", "旅游景点"},
	{"公园", "散步"}, {"绿道", "散步"}, {"步道", "散步"}, {"广场", "散步"}, {"栈道", "散步"},
	{"步行街", "步行街"}, {"老街", "步行街"},
	{"小吃", "美食街"}, {"美食", "美食街"}, {"夜市", "美食街"}, {"大排档", "美食街"},
	{"餐厅", "餐厅"}, {"饭店", "餐厅"}, {"酒楼", "餐厅"}, {"食府", "餐厅"}, {"火锅", "餐厅"},
	{"菜市场", "市场"}, {"农贸", "市场"}, {"市场", "市场"},
	{"超市", "小商店"}, {"便利店", "小商店"}, {"小卖部", "小商店"}, {"商店", "小商店"},
	{"商场", "商场"}, {"购物", "商场"}, {"百货", "商场"},
	{"公交", "公共交通"}, {"地铁", "公共交通"}, {"车站", "公共交通"}, {"机场", "公共交通"},
	{"高铁", "公共交通"}, {"码头", "公共交通"}, {"客运", "公共交通"},
	{"民宿", "酒店"}, {"客栈", "酒店"}, {"宾馆", "酒店"}, {"酒店", "酒店"}, {"度假", "酒店"},
	{"医院", "一般公共场所"}, {"诊所", "一般公共场所"}, {"政务", "一般公共场所"}, {"服务中心", "一般公共场所"},
	{"体育", "户外活动"}, {"运动", "户外活动"}, {"健身", "户外活动"}, {"露营", "户外活动"},
	{"骑行", "骑行目的地"}, {"自行车", "骑行目的地"},
	{"租车", "租车"}, {"汽车租赁", "租车"},
	{"彩票", "彩票购买点"},
	{"4S", "车辆维修"}, {"维修", "车辆维修"}, {"汽修", "车辆维修"},
	{"停车", "暂且休息"}, {"服务区", "暂且休息"}, {"休息区", "暂且休息"},
	{"公司", "工作"}, {"办公", "工作"}, {"产业园", "工作"}, {"工厂", "工作"},
	{"塔", "地标"}, {"大桥", "地标"}, {"地标", "地标"}, {"牌坊", "地标"},
	{"乡镇", "乡镇"}, {"村委会", "乡镇"}, {"街道办", "乡镇"},
	{"山峰", "山"}, {"峡谷", "山"}, {"雪山", "山"},
}

// amapActHints 从高德 POI 类型猜活动（高德给的是「大类;小类」形式，按子串匹配）。
var amapActHints = []actHint{
	{"咖啡厅", "奶茶和甜甜水"}, {"茶艺馆", "奶茶和甜甜水"}, {"冷饮店", "奶茶和甜甜水"},
	{"图书馆", "学习"}, {"学校", "学习"}, {"高等院校", "学习"}, {"中学", "学习"}, {"小学", "学习"},
	{"博物馆", "纪念馆"}, {"展览馆", "纪念馆"}, {"科教文化", "纪念馆"},
	{"动物园", "动物园"}, {"水族馆", "动物园"},
	{"海滩", "沙滩"}, {"海滨浴场", "沙滩"},
	{"风景名胜", "旅游景点"}, {"公园广场", "旅游景点"}, {"寺庙道观", "旅游景点"},
	{"公园", "散步"}, {"城市广场", "散步"},
	{"特色街区", "步行街"},
	{"小吃快餐", "美食街"}, {"美食街", "美食街"}, {"餐饮相关", "美食街"},
	{"中餐厅", "餐厅"}, {"外国餐厅", "餐厅"}, {"餐厅", "餐厅"}, {"快餐厅", "餐厅"},
	{"综合市场", "市场"}, {"农副产品市场", "市场"}, {"菜市场", "市场"},
	{"便利店", "小商店"}, {"超市", "小商店"}, {"专卖店", "小商店"}, {"小商品市场", "小商店"},
	{"商场", "商场"}, {"购物中心", "商场"}, {"百货商场", "商场"},
	{"地铁站", "公共交通"}, {"公交车站", "公共交通"}, {"火车站", "公共交通"},
	{"机场", "公共交通"}, {"港口码头", "公共交通"}, {"长途汽车站", "公共交通"},
	{"宾馆酒店", "酒店"}, {"旅馆招待所", "酒店"}, {"度假村", "酒店"},
	{"综合医院", "一般公共场所"}, {"专科医院", "一般公共场所"}, {"诊所", "一般公共场所"},
	{"政府机关", "一般公共场所"}, {"社会团体", "一般公共场所"},
	{"运动场馆", "户外活动"}, {"健身中心", "户外活动"}, {"露营地", "户外活动"},
	{"汽车租赁", "租车"}, {"汽车维修", "车辆维修"}, {"汽车服务", "车辆维修"},
	{"彩票", "彩票购买点"},
	{"停车场", "暂且休息"}, {"服务区", "暂且休息"},
	{"公司", "工作"}, {"写字楼", "工作"}, {"产业园区", "工作"},
	{"旅游景点", "旅游景点"},
	{"商务住宅", "家"}, {"住宅区", "家"},

	// 一级大类兜底
	{"餐饮服务", "餐厅"},
	{"购物服务", "商场"},
	{"住宿服务", "酒店"},
	{"交通设施服务", "公共交通"},
}

// mkHints 从高德 POI 类型猜 MapKit 类别。
//
// 值必须是真机能认的枚举名（`MKPOICategory` + 驼峰）。已确认真机用过的是这 12 种：
// Restaurant / Store / PublicTransport / Hotel / Landmark / FoodMarket / Beach /
// Museum / Campground / Zoo / Stadium / Park。其余取 MapKit 的公开枚举名，
// 万一写错，rond 那边只会显示成原始串，不会损坏数据。
var mkHints = []actHint{
	{"咖啡厅", "MKPOICategoryCafe"}, {"茶艺馆", "MKPOICategoryCafe"}, {"冷饮店", "MKPOICategoryCafe"},
	{"糕饼店", "MKPOICategoryBakery"}, {"面包", "MKPOICategoryBakery"},
	{"图书馆", "MKPOICategoryLibrary"},
	{"学校", "MKPOICategorySchool"}, {"中学", "MKPOICategorySchool"}, {"小学", "MKPOICategorySchool"},
	{"高等院校", "MKPOICategoryUniversity"},
	{"博物馆", "MKPOICategoryMuseum"}, {"展览馆", "MKPOICategoryMuseum"},
	{"动物园", "MKPOICategoryZoo"}, {"水族馆", "MKPOICategoryAquarium"},
	{"海滩", "MKPOICategoryBeach"}, {"海滨浴场", "MKPOICategoryBeach"},
	{"风景名胜", "MKPOICategoryLandmark"}, {"寺庙道观", "MKPOICategoryLandmark"},
	{"公园", "MKPOICategoryPark"}, {"城市广场", "MKPOICategoryLandmark"},
	{"露营地", "MKPOICategoryCampground"},
	{"综合市场", "MKPOICategoryFoodMarket"}, {"农副产品市场", "MKPOICategoryFoodMarket"},
	{"便利店", "MKPOICategoryStore"}, {"超市", "MKPOICategoryStore"},
	{"专卖店", "MKPOICategoryStore"}, {"商场", "MKPOICategoryStore"}, {"购物中心", "MKPOICategoryStore"},
	{"地铁站", "MKPOICategoryPublicTransport"}, {"公交车站", "MKPOICategoryPublicTransport"},
	{"火车站", "MKPOICategoryPublicTransport"}, {"港口码头", "MKPOICategoryPublicTransport"},
	{"长途汽车站", "MKPOICategoryPublicTransport"},
	{"机场", "MKPOICategoryAirport"},
	{"宾馆酒店", "MKPOICategoryHotel"}, {"旅馆招待所", "MKPOICategoryHotel"}, {"度假村", "MKPOICategoryHotel"},
	{"综合医院", "MKPOICategoryHospital"}, {"专科医院", "MKPOICategoryHospital"},
	{"诊所", "MKPOICategoryHospital"}, {"药房", "MKPOICategoryPharmacy"},
	{"运动场馆", "MKPOICategoryStadium"}, {"健身中心", "MKPOICategoryFitnessCenter"},
	{"电影院", "MKPOICategoryMovieTheater"}, {"剧场", "MKPOICategoryTheater"},
	{"汽车租赁", "MKPOICategoryCarRental"}, {"加油站", "MKPOICategoryGasStation"},
	{"停车场", "MKPOICategoryParking"},
	{"银行", "MKPOICategoryBank"}, {"自动取款机", "MKPOICategoryAtm"},
	{"邮局", "MKPOICategoryPostOffice"}, {"派出所", "MKPOICategoryPolice"},
	{"中餐厅", "MKPOICategoryRestaurant"}, {"外国餐厅", "MKPOICategoryRestaurant"},
	{"快餐厅", "MKPOICategoryRestaurant"}, {"餐厅", "MKPOICategoryRestaurant"},

	// 高德的一级大类兜底：小类不认识时至少落到大类上
	{"餐饮服务", "MKPOICategoryRestaurant"},
	{"购物服务", "MKPOICategoryStore"},
	{"住宿服务", "MKPOICategoryHotel"},
	{"体育休闲服务", "MKPOICategoryStadium"},
	{"医疗保健服务", "MKPOICategoryHospital"},
	{"风景名胜", "MKPOICategoryLandmark"},
	{"交通设施服务", "MKPOICategoryPublicTransport"},
	{"金融保险服务", "MKPOICategoryBank"},
}

// trimParens 只看括号外的主体：「尚优居客栈(大理古城步行街店)」是个客栈，
// 括号里那串只是地址，不该拿它来判断。
func trimParens(s string) string {
	if i := strings.IndexAny(s, "(（[【"); i > 0 {
		return s[:i]
	}
	return s
}

// matchHint 取**最长的**命中词——越长的词越具体。
//
// 不用「定义顺序」也不用「出现位置」：前者要求把词表排成一件容易出错的事，
// 后者会让「马鞍山公园」命中「山」而不是「公园」。长度相同则取先定义的。
func matchHint(hints []actHint, s string) string {
	if s == "" {
		return ""
	}
	best, bestLen := "", 0
	for _, h := range hints {
		if len(h.kw) > bestLen && strings.Contains(s, h.kw) {
			best, bestLen = h.val, len(h.kw)
		}
	}
	return best
}

// matchNameHint 是地名专用的入口：先掐掉括号里的地址再匹配。
func matchNameHint(hints []actHint, s string) string {
	return matchHint(hints, trimParens(s))
}

// guessActivityByName 从地名猜活动，命中表示置信度高。
func guessActivityByName(name string) string { return matchNameHint(nameActHints, name) }

// matchAmapType 在高德类型串里找映射。高德给的是「大类;小类」，
// **小类更具体**（「风景名胜;公园」该按公园算，不是风景名胜），所以先试小类再退回大类。
func matchAmapType(hints []actHint, t string) string {
	if t == "" {
		return ""
	}
	if i := strings.LastIndexByte(t, ';'); i >= 0 {
		if v := matchHint(hints, t[i+1:]); v != "" {
			return v
		}
		return matchHint(hints, t[:i])
	}
	return matchHint(hints, t)
}

func guessActivityFromAmapType(t string) string { return matchAmapType(amapActHints, t) }

func guessCategoryFromAmapType(t string) string { return matchAmapType(mkHints, t) }

// knownMKCategories 是真机确认用过的类别，界面上标一下，方便一眼看出哪些是「新猜的」。
var knownMKCategories = map[string]bool{
	"MKPOICategoryRestaurant":      true,
	"MKPOICategoryStore":           true,
	"MKPOICategoryPublicTransport": true,
	"MKPOICategoryHotel":           true,
	"MKPOICategoryLandmark":        true,
	"MKPOICategoryFoodMarket":      true,
	"MKPOICategoryBeach":           true,
	"MKPOICategoryMuseum":          true,
	"MKPOICategoryCampground":      true,
	"MKPOICategoryZoo":             true,
	"MKPOICategoryStadium":         true,
	"MKPOICategoryPark":            true,
}

// mkCategoryKnown 报告这个类别真机是否用过。
func mkCategoryKnown(c string) bool { return knownMKCategories[c] }