package main

import (
	"cicv-data-closedloop/pjisuv_ticker"
	"fmt"
	"sync"
	"time"
)

type Point struct {
	x, y float64
}

var (
	vertices = []Point{
		{x: 456095.447, y: 4397845.34},
		{x: 456445.083, y: 4398067.52},
		{x: 456536.143, y: 4397909.14},
		{x: 456168.902, y: 4397709.52},
	}
)

func isPointInPolygon(p Point, vertices []Point) bool {
	intersections := 0
	for i := 0; i < len(vertices); i++ {
		j := (i + 1) % len(vertices)
		if rayIntersectsSegment(p, vertices[i], vertices[j]) {
			intersections++
		}
	}
	return intersections%2 == 1
}

func rayIntersectsSegment(p, p1, p2 Point) bool {
	if p1.y > p2.y {
		p1, p2 = p2, p1
	}
	if p.y == p1.y || p.y == p2.y {
		p.y += 0.0001
	}

	if p.y < p1.y || p.y > p2.y {
		return false
	}

	if p.x > max(p1.x, p2.x) {
		return false
	}

	if p.x < min(p1.x, p2.x) {
		return true
	}

	blueSlope := (p.y-p1.y)*(p2.x-p1.x)/(p2.y-p1.y) + p1.x
	return p.x < blueSlope
}

func min(a, b float64) float64 {
	if a < b {
		return a
	}
	return b
}

func max(a, b float64) float64 {
	if a > b {
		return a
	}
	return b
}

// 定时任务触发器固定的
func Topic() string {
	return pjisuv_ticker.TickerTopic
}

// ******* 禁止存在下划线_
// 触发器标记

func Label() string {
	return "HuaLong"
}

func Rule(shareVars *sync.Map) {
	defer func() {
		if r := recover(); r != nil {
			fmt.Println("Recovered from panic:", r)
		}
	}()
	// 1 使用goroutine
	go func(shareVars *sync.Map) {
		// 2 定义触发器的间隔时间
		ticker := time.NewTicker(time.Duration(2) * time.Second)
		defer ticker.Stop()
		// 3 运行一个无限循环
		for {
			select {
			// 定时器触发时执行的代码
			case <-ticker.C:
				FinalCallback(shareVars)

			}
		}
	}(shareVars)
}

func FinalCallback(shareVars *sync.Map) {
	PositionX, ok1 := shareVars.Load("PositionXOfCicvLocation")
	PositionY, ok2 := shareVars.Load("PositionYOfCicvLocation")
	AbsSpeed, ok3 := shareVars.Load("AbsSpeed")
	if ok1 && ok2 && ok3 {
		p := Point{x: PositionX.(float64), y: PositionY.(float64)}
		if !isPointInPolygon(p, vertices) && AbsSpeed.(float64) >= 1 {
			eventLabel := "OutOperationZone"
			fmt.Println(eventLabel)
			pjisuv_ticker.TickerChan <- pjisuv_ticker.TickInfo{FaultLabel: Label(), FaultHappenTime: pjisuv_ticker.GetNowTimeCustom()}
		}
	}

}