// Package testusers creates explicitly labelled, non-loginable test profiles.
// It is only used by an operator-invoked CLI, never during server startup.
package testusers

import (
	"fmt"
	"net/url"
	"strings"
)

const Batch = "cn-adults-20260831-v1"
const Count = 100

type Profile struct {
	PublicID   string  `json:"publicId"`
	IsTest     bool    `json:"isTest"`
	TestBatch  string  `json:"testBatch"`
	Label      string  `json:"label"`
	Nickname   string  `json:"nickname"`
	Gender     int     `json:"gender"`
	Birthday   string  `json:"birthday"`
	Height     int     `json:"height"`
	CityCode   string  `json:"cityCode"`
	City       string  `json:"city"`
	Occupation string  `json:"occupation"`
	Bio        string  `json:"bio"`
	AvatarFile string  `json:"avatarFile"`
	Avatar     string  `json:"avatar"`
	Latitude   float64 `json:"latitude"`
	Longitude  float64 `json:"longitude"`
}

type fixtureCity struct {
	Code      string
	Name      string
	Latitude  float64
	Longitude float64
}

// Avatars contains five independently generated adult portraits per gender.
// Reuse is intentional for fixtures; these are not 100 real identities.
func Avatars() []string {
	files := make([]string, 0, 10)
	for gender := 1; gender <= 2; gender++ {
		for n := 1; n <= 5; n++ {
			files = append(files, fmt.Sprintf("900028%d%d-1.png", gender, n))
		}
	}
	return files
}

func Generate(publicBase string) ([]Profile, error) {
	base, err := url.Parse(strings.TrimRight(publicBase, "/"))
	if err != nil || base.Host == "" || base.User != nil || base.RawQuery != "" || base.Fragment != "" || (base.Scheme != "http" && base.Scheme != "https") {
		return nil, fmt.Errorf("public base must be an absolute HTTP(S) uploads URL without credentials, query or fragment")
	}
	if base.Scheme == "http" && base.Hostname() != "127.0.0.1" && base.Hostname() != "localhost" && base.Hostname() != "::1" {
		return nil, fmt.Errorf("non-local avatar URLs require HTTPS")
	}
	surnames := []string{"陈", "林", "周", "许", "苏", "沈", "陆", "顾", "方", "季"}
	given := [][]string{{"沐川", "知远", "星河", "景行", "予安"}, {"晚晴", "知夏", "语桐", "清禾", "若宁"}}
	cities := []fixtureCity{
		{"310100", "上海", 31.2304, 121.4737}, {"440100", "广州", 23.1291, 113.2644},
		{"440300", "深圳", 22.5431, 114.0579}, {"330100", "杭州", 30.2741, 120.1551},
		{"510100", "成都", 30.5728, 104.0668}, {"420100", "武汉", 30.5928, 114.3055},
		{"320100", "南京", 32.0603, 118.7969}, {"350200", "厦门", 24.4798, 118.0894},
		{"610100", "西安", 34.3416, 108.9398}, {"370200", "青岛", 36.0671, 120.3826},
	}
	jobs := []string{"设计师", "工程师", "教师", "摄影师", "产品经理"}
	hobbies := []string{"摄影与城市漫步", "阅读与咖啡", "跑步与音乐", "旅行与美食", "电影与绘画"}
	ages := [2][5]int{{27, 30, 24, 33, 28}, {26, 29, 24, 32, 27}}
	items := make([]Profile, 0, Count)
	for gender := 1; gender <= 2; gender++ {
		for i := 0; i < 50; i++ {
			avatarFile := fmt.Sprintf("900028%d%d-1.png", gender, i%5+1)
			city := cities[i%len(cities)]
			ring := i / len(cities)
			latitude := city.Latitude + float64(ring-2)*0.012 + float64(gender-1)*0.006
			longitude := city.Longitude + float64((ring*2+gender)%5-2)*0.012
			items = append(items, Profile{
				PublicID: fmt.Sprintf("TESTCN%06d", (gender-1)*50+i+1),
				IsTest:   true, TestBatch: Batch, Label: "测试用户",
				Nickname: "测试·" + surnames[i/5] + given[gender-1][i%5],
				Gender:   gender, Birthday: fmt.Sprintf("%d-%02d-%02d", 2026-ages[gender-1][i%5], i%6+1, i%27+1),
				Height:   160 + (2-gender)*12 + i%12,
				CityCode: city.Code, City: city.Name, Occupation: jobs[i%len(jobs)],
				Bio:        "【测试数据】虚构资料，AI生成中国成年人头像，仅供功能测试，非真实交友用户。兴趣示例：" + hobbies[i%len(hobbies)] + "。",
				AvatarFile: avatarFile, Avatar: base.String() + "/" + avatarFile,
				Latitude: latitude, Longitude: longitude,
			})
		}
	}
	return items, nil
}