package flow

import (
	"database/sql"
	"encoding/binary"
	"log"
	"os"
	"sync"
	"time"

	_ "github.com/mattn/go-sqlite3"
	serial "github.com/tarm/serial"
	"gopkg.in/ini.v1"
)

// GetOperatorDB 获取 operator 日志
func GetOperatorDB() *sql.DB {
	db, err := sql.Open("sqlite3", "./log.db")
	if err != nil {
		panic(err)
	}
	_, err = db.Exec("create table if not EXISTS operator ( ts INT, rootflow varchar(255), flowpath text, writelog char(8), readlog char(14))")
	if err != nil {
		panic(err)
	}
	return db
}

// OperatorFlag 操作位
type OperatorFlag uint16

const (
	UltrasonicPower OperatorFlag = 0b1000000000000000 // UltrasonicPower bit15 超声波电源开关	1开，0关
	// CYZ-A-X
	CirculatingIrrigation OperatorFlag = 0b0100000000000000 // CirculatingIrrigation bit14	循环灌洗水泵 1开，0关
	UFRecoil              OperatorFlag = 0b0010000000000000 // bit13	UF 超滤膜反冲进水阀	1开，0关
	UFPositive            OperatorFlag = 0b0001000000000000 // bit12	UF 超滤膜正冲进水阀	1开，0关
	// YM-01-X-03
	UFTreatedWater OperatorFlag = 0b0000100000000000 // bit11	UF 超滤膜净水出水阀	1开，0关
	UFRawWater     OperatorFlag = 0b0000010000000000 // bit10	UF超滤膜原水进水阀	1开，0关
	// CirculatingTankWashWater YM-01-X-01
	CirculatingTankWashWater      OperatorFlag = 0b0000001000000000 // bit9	循环罐洗进水电动球阀	1开，0关
	UFPositiveFlushingWaterOutlet OperatorFlag = 0b0000000100000000 // bit8	UF超滤膜正冲浓水出口电磁阀	1开，0关
	// CleaningTankExhaust YV-02-02-1-X-06
	CleaningTankExhaust        OperatorFlag = 0b0000000010000000 // bit7	清洗罐排气电磁阀	1开，0关
	DPFCompactCylinderControlB OperatorFlag = 0b0000000001000000 // bit6	DPF压紧气缸控制电磁阀B	1开，0关
	DPFCompactCylinderControlA OperatorFlag = 0b0000000000100000 // bit5	DPF压紧气缸控制电磁阀A	1开，0关
	// YV-02-05-1-X-04
	CleaningTankDrainingWater OperatorFlag = 0b0000000000010000 // bit4	清洗罐放水阀控制电磁阀	1开，0关
	GasExplosion              OperatorFlag = 0b0000000000001000 // bit3	气爆阀控制电磁阀	1开，0关
	// YV-02-02-1-X-02
	CleaningTankInflation OperatorFlag = 0b0000000000000100 // bit2	清洗罐充气电磁阀	1开，0关
	CleaningTankSealB     OperatorFlag = 0b0000000000000010 // bit1	清洗罐密封圈充气电磁阀B	1开，0关
	CleaningTankSealA     OperatorFlag = 0b0000000000000001 // bit0	清洗罐密封圈充气电磁阀A	1开，0关
)

// OperatorOption 操作位设置
func OperatorOption(flag OperatorFlag) []byte {
	var buf []byte = make([]byte, 8, 8)
	buf[0] = byte(0xaa)
	buf[1] = byte(0x55)
	binary.BigEndian.PutUint16(buf[2:], uint16(flag))
	check := byte(0)
	for _, b := range buf {
		check += b
	}
	buf[7] = check
	return buf
}

// Operator 日志系统
type Operator struct {
	port *serial.Port

	portReaderLock *sync.Mutex
	portWriterLock *sync.Mutex

	oplog *sql.DB
}

var operator *Operator

func init() {
	op := &Operator{}
	op.portReaderLock = &sync.Mutex{}
	op.portWriterLock = &sync.Mutex{}

	op.oplog = GetOperatorDB()

	var portid string
	var baud int
	var rtimeout time.Duration

	var cfg *ini.File
	cfg, err := ini.Load("my.cfg")
	if err != nil {
		log.Println(err)
		log.Println("加载配置my.cfg失败, 将使用默认值")
		f, err := os.OpenFile("./my.cfg", os.O_CREATE|os.O_WRONLY, 0666)
		if err != nil {
			panic(err)
		}
		f.WriteString("[config]\nportid = COM1\nbaud = 9600\nreadtimeout = 5")
		cfg, err = ini.Load("my.cfg")
		if err != nil {
			panic(err)
		}
	}

	section := cfg.Section("config")
	portid = section.Key("portid").MustString("COM1")
	baud = section.Key("baud").MustInt(9600)
	rtimeout = time.Second * time.Duration(section.Key("readtimeout").MustInt64(5))

	port, err := serial.OpenPort(&serial.Config{Name: portid, Baud: baud, ReadTimeout: rtimeout})
	if err != nil {
		panic(err)
	}
	op.port = port
}