package ui

import (
	"fmt"

	"silverpose/v2/internal/fall"
	"silverpose/v2/internal/source"
)

// WindowSpec locks the visual baseline tested by the Windows UI Spike.  The
// production V2 app will consume the same semantic colours and medium desktop
// layout after the decoding/inference pipeline is complete.
type WindowSpec struct {
	Title         string
	Width         int
	Height        int
	BackgroundHex string
	SurfaceHex    string
	AccentHex     string
	AlertHex      string
}

func MonitorWindowSpec() WindowSpec {
	return WindowSpec{
		Title:         "Silver Pose V2",
		Width:         1120,
		Height:        720,
		BackgroundHex: "#EAF1F8",
		SurfaceHex:    "#FFFFFF",
		AccentHex:     "#2563EB",
		AlertHex:      "#C62828",
	}
}

// ViewModel is a UI-thread-neutral snapshot. It deliberately stores only a
// source environment variable name and status, never a resolved RTSP URL.
type ViewModel struct {
	ConnectionText  string
	StateText       string
	EventText       string
	SettingsSummary string
	Critical        bool
}

func NewViewModel() ViewModel {
	return ViewModel{
		ConnectionText: "等待启动监控",
		StateText:      "检测状态：正常",
		EventText:      "事件：暂无",
	}
}

func (model *ViewModel) Apply(state fall.State, status source.Status) {
	model.Critical = state == fall.Confirmed
	switch state {
	case fall.Confirmed:
		model.StateText = "检测状态：确认摔倒"
		model.EventText = "事件：已确认，已保存证据"
	case fall.Suspect:
		model.StateText = "检测状态：疑似倒地"
		model.EventText = "事件：正在持续确认"
	case fall.Recovering:
		model.StateText = "检测状态：恢复观察中"
		model.EventText = "事件：等待恢复稳定"
	default:
		model.StateText = "检测状态：正常"
		model.EventText = "事件：暂无"
	}
	switch status {
	case source.Connected:
		model.ConnectionText = "视频流：在线"
	case source.Retrying:
		model.ConnectionText = "视频流：正在重连，不触发摔倒报警"
	case source.Stopped:
		model.ConnectionText = "视频流：已停止"
	default:
		model.ConnectionText = "视频流：正在连接"
	}
}

func (model *ViewModel) SetSourceReady(environmentName string, ready bool) {
	state := "未就绪"
	if ready {
		state = "已就绪"
	}
	model.SettingsSummary = fmt.Sprintf("来源环境变量 %s：%s", environmentName, state)
}