package sysin

import (
	"context"
	"net/url"
	"strconv"
	"strings"

	"hotgo/internal/consts"
	"hotgo/internal/library/dict"
	"hotgo/internal/model/input/form"

	"github.com/gogf/gf/v2/errors/gerror"
	"github.com/gogf/gf/v2/os/gtime"
)

type ImAppReleaseListInp struct {
	form.PageReq
	Platform string `json:"platform" dc:"平台"`
	Channel  string `json:"channel"  dc:"渠道"`
}

func (in *ImAppReleaseListInp) Filter(ctx context.Context) (err error) {
	in.Platform = strings.TrimSpace(in.Platform)
	in.Channel = strings.TrimSpace(in.Channel)
	if in.Platform != "" && !dict.HasOptionKey(consts.ImAppPlatformOptions, in.Platform) {
		return gerror.New("客户端平台不合法")
	}
	return nil
}

type ImAppReleaseModel struct {
	Id                  int64       `json:"id"                  dc:"ID"`
	Platform            string      `json:"platform"            dc:"平台"`
	Channel             string      `json:"channel"             dc:"渠道"`
	LatestVersion       string      `json:"latestVersion"       dc:"最新版本"`
	MinSupportedVersion string      `json:"minSupportedVersion" dc:"最低支持版本"`
	UpdateType          string      `json:"updateType"          dc:"更新类型"`
	ReleaseNotes        string      `json:"releaseNotes"        dc:"更新说明"`
	StoreUrl            string      `json:"storeUrl"            dc:"商店地址"`
	PackageUrl          string      `json:"packageUrl"          dc:"安装包地址"`
	Checksum            string      `json:"checksum"            dc:"校验值"`
	RemindAfterSeconds  int         `json:"remindAfterSeconds"  dc:"再次提醒秒数"`
	PublishedAt         *gtime.Time `json:"publishedAt"         dc:"发布时间"`
	CreatedAt           *gtime.Time `json:"createdAt"           dc:"创建时间"`
	UpdatedAt           *gtime.Time `json:"updatedAt"           dc:"更新时间"`
}

type ImAppReleaseEditInp struct {
	Id                  int64  `json:"id"                  dc:"ID"`
	Platform            string `json:"platform"            v:"required#平台不能为空" dc:"平台"`
	Channel             string `json:"channel"             v:"required#渠道不能为空" dc:"渠道"`
	LatestVersion       string `json:"latestVersion"       v:"required#最新版本不能为空" dc:"最新版本"`
	MinSupportedVersion string `json:"minSupportedVersion" v:"required#最低支持版本不能为空" dc:"最低支持版本"`
	UpdateType          string `json:"updateType"          v:"required#更新类型不能为空" dc:"更新类型"`
	ReleaseNotes        string `json:"releaseNotes"        dc:"更新说明"`
	StoreUrl            string `json:"storeUrl"            dc:"商店地址"`
	PackageUrl          string `json:"packageUrl"          dc:"安装包地址"`
	Checksum            string `json:"checksum"            dc:"校验值"`
	RemindAfterSeconds  int    `json:"remindAfterSeconds"  dc:"再次提醒秒数"`
}

func (in *ImAppReleaseEditInp) Filter(ctx context.Context) (err error) {
	in.Platform = strings.TrimSpace(in.Platform)
	in.Channel = strings.TrimSpace(in.Channel)
	in.LatestVersion = strings.TrimSpace(in.LatestVersion)
	in.MinSupportedVersion = strings.TrimSpace(in.MinSupportedVersion)
	in.UpdateType = strings.TrimSpace(in.UpdateType)
	in.StoreUrl = strings.TrimSpace(in.StoreUrl)
	in.PackageUrl = strings.TrimSpace(in.PackageUrl)
	in.Checksum = strings.TrimSpace(in.Checksum)
	if !dict.HasOptionKey(consts.ImAppPlatformOptions, in.Platform) {
		return gerror.New("客户端平台不合法")
	}
	if in.Channel == "" || strings.ContainsAny(in.Channel, " \t\r\n/") || len([]rune(in.Channel)) > 32 {
		return gerror.New("渠道不能为空，且不能包含空格或斜杠")
	}
	if in.LatestVersion == "" || len([]rune(in.LatestVersion)) > 64 {
		return gerror.New("最新版本不能为空且不能超过64个字符")
	}
	if in.MinSupportedVersion == "" || len([]rune(in.MinSupportedVersion)) > 64 {
		return gerror.New("最低支持版本不能为空且不能超过64个字符")
	}
	latest, err := parseAppVersion(in.LatestVersion)
	if err != nil {
		return gerror.New("最新版本号格式不正确，请使用数字点分版本号")
	}
	minimum, err := parseAppVersion(in.MinSupportedVersion)
	if err != nil {
		return gerror.New("最低支持版本号格式不正确，请使用数字点分版本号")
	}
	if compareAppVersion(latest, minimum) < 0 {
		return gerror.New("最新版本不能低于最低支持版本")
	}
	if !dict.HasOptionKey(consts.ImAppUpdateTypeOptions, in.UpdateType) {
		return gerror.New("更新类型不合法")
	}
	if in.RemindAfterSeconds < 0 {
		return gerror.New("再次提醒时间不能小于0")
	}
	if in.Platform == consts.ImAppPlatformIos && in.UpdateType != consts.ImAppUpdateTypeNone {
		storeURL, parseErr := url.Parse(in.StoreUrl)
		if parseErr != nil || storeURL.Scheme != "https" || !strings.EqualFold(storeURL.Hostname(), "apps.apple.com") {
			return gerror.New("iOS更新策略需要配置 apps.apple.com 的 HTTPS 商店地址")
		}
		in.PackageUrl = ""
		in.Checksum = ""
	}
	return nil
}

func parseAppVersion(raw string) ([]uint64, error) {
	raw = strings.TrimPrefix(strings.ToLower(strings.TrimSpace(raw)), "v")
	parts := strings.Split(raw, ".")
	if len(parts) == 0 || len(parts) > 8 {
		return nil, gerror.New("版本号格式不正确")
	}
	result := make([]uint64, len(parts))
	for i, part := range parts {
		if part == "" {
			return nil, gerror.New("版本号格式不正确")
		}
		value, err := strconv.ParseUint(part, 10, 32)
		if err != nil {
			return nil, err
		}
		result[i] = value
	}
	return result, nil
}

func compareAppVersion(left, right []uint64) int {
	length := len(left)
	if len(right) > length {
		length = len(right)
	}
	for i := 0; i < length; i++ {
		var l, r uint64
		if i < len(left) {
			l = left[i]
		}
		if i < len(right) {
			r = right[i]
		}
		if l < r {
			return -1
		}
		if l > r {
			return 1
		}
	}
	return 0
}