package crontab

import (
	"database/sql"
	"fmt"
	"math"

	"gorm.io/driver/mysql"
	"gorm.io/gorm"
)

type HActiveHabit struct {
	ID            uint
	IntPastureID  uint
	IntCowID      uint
	VarCowCode    string
	IntCurFetal   uint
	DIM           uint
	Createtime    sql.NullString
	Changeadjust  uint
	Changefilter  uint
	Filtercorrect float64
	Ruminafilter  int
	Filterhigh    uint
	Heatdate      sql.NullString
}

func main() {
	dsn := "username:password@tcp(127.0.0.1:3306)/dbname?charset=utf8mb4&parseTime=True&loc=Local"
	db, err := gorm.Open(mysql.Open(dsn), &gorm.Config{})
	if err != nil {
		panic("failed to connect database")
	}

	// 假设这些变量是从外部传入的
	xbegactid, xendactid := uint(1), uint(100)
	xPastuId := uint(123)
	xthatdate := "2023-10-01"
	xactlevellow := float64(10)
	xadjust21 := float64(2)
	maxruminaadjust := int(10)
	rumtoheat := float64(0.5) // 假设值

	var habits []HActiveHabit
	db.Where("id BETWEEN ? AND ? AND int_pasture_id = ? AND heatdate = ?", xbegactid, xendactid, xPastuId, xthatdate).
		Find(&habits)

	var results []struct {
		IntPastureID uint
		IntCowID     uint
		VarCowCode   string
		IntCurFetal  uint
		DIM          uint
		Createtime   string
		CFT          float64
		High         uint
	}

	cowMap := make(map[uint][]HActiveHabit)
	for _, habit := range habits {
		cowMap[habit.IntCowID] = append(cowMap[habit.IntCowID], habit)
	}

	for cowID, habits := range cowMap {
		var createtime string
		var cft float64
		var high uint
		if len(habits) > 0 {
			sortedHabits := sortHabitsByChangefilterDesc(habits)
			createtime = sortedHabits[0].Createtime.String

			maxCft := float64(-math.MaxFloat64)
			for _, habit := range sortedHabits {
				adjustedValue := calculateAdjustedValue(habit, maxruminaadjust, rumtoheat)
				if adjustedValue > maxCft {
					maxCft = adjustedValue
					high = habit.Filterhigh
				}
			}
			cft = round(maxCft)
		}

		if cft >= (xactlevellow - xadjust21) {
			anyDimValid := false
			for _, habit := range habits {
				if habit.DIM >= 20 || habit.IntCurFetal == 0 {
					anyDimValid = true
					break
				}
			}
			if anyDimValid {
				results = append(results, struct {
					IntPastureID uint
					IntCowID     uint
					VarCowCode   string
					IntCurFetal  uint
					DIM          uint
					Createtime   string
					CFT          float64
					High         uint
				}{
					IntPastureID: habits[0].IntPastureID,
					IntCowID:     cowID,
					VarCowCode:   habits[0].VarCowCode,
					IntCurFetal:  habits[0].IntCurFetal,
					DIM:          habits[0].DIM,
					Createtime:   createtime,
					CFT:          cft,
					High:         high,
				})
			}
		}
	}

	for _, result := range results {
		fmt.Printf("IntPastureID: %d, IntCowID: %d, VarCowCode: %s, IntCurFetal: %d, DIM: %d, Createtime: %s, CFT: %.2f, High: %d\n",
			result.IntPastureID, result.IntCowID, result.VarCowCode, result.IntCurFetal, result.DIM, result.Createtime, result.CFT, result.High)
	}
}

func sortHabitsByChangefilterDesc(habits []HActiveHabit) []HActiveHabit {
	sorted := make([]HActiveHabit, len(habits))
	copy(sorted, habits)
	for i := range sorted {
		for j := i + 1; j < len(sorted); j++ {
			if sorted[i].Changefilter < sorted[j].Changefilter {
				sorted[i], sorted[j] = sorted[j], sorted[i]
			}
		}
	}
	return sorted
}

func calculateAdjustedValue(habit HActiveHabit, maxruminaadjust int, rumtoheat float64) float64 {
	baseValue := float64(0)
	if habit.Changeadjust >= 10 {
		baseValue = float64(habit.Changefilter-habit.Changeadjust+3) * habit.Filtercorrect / 100
	} else {
		baseValue = float64(habit.Changefilter) * habit.Filtercorrect / 100
	}

	ruminaAdjustment := float64(0)
	if habit.Ruminafilter > maxruminaadjust {
		ruminaAdjustment = 5
	} else if habit.Ruminafilter > 0 {
		ruminaAdjustment = float64(habit.Ruminafilter) * 0.25
	} else if habit.Ruminafilter < -maxruminaadjust {
		ruminaAdjustment = float64(-maxruminaadjust) * rumtoheat
	} else {
		ruminaAdjustment = float64(habit.Ruminafilter) * rumtoheat
	}

	return baseValue - ruminaAdjustment
}

func round(value float64) float64 {
	return math.Round(value*100) / 100
}