package internal

import (
	"context"
	"errors"
	"log"
	"os"
	"strconv"

	"google.golang.org/grpc"
	"nim.jasinco.work/app/igapi"
)

type PR struct {
	ACT_TYPE int //0 for post, 1 for revoke
	ID       int32
}

var (
	SALT           string
	POSTGRES_URL   string
	JWT_SECRET     string
	FETCH_LENGTH   int32
	PREFORK        bool
	IGAPI_HOST     string
	CORS_ALLOW     string
	IGAPI_ACTIVATE bool
	IGAPI_CHAN     = make(chan PR, 20)
	err            error
	conv           int64
)

func ReadFromENV() error {
	SALT = os.Getenv("SALT")
	if len(SALT) < 8 {
		return errors.New("Invalid Salt")
	}
	POSTGRES_URL = os.Getenv("POSTGRES_URL")
	if len(POSTGRES_URL) < 1 {
		return errors.New("POSTGRES_URL NOT FOUND")
	}
	JWT_SECRET = os.Getenv("JWT_SECRET")
	if len(JWT_SECRET) < 10 {
		return errors.New("INVALID JWT SECRET")
	}
	fetch_len_str := os.Getenv("FETCH_LENGTH")
	if len(fetch_len_str) == 0 {
		FETCH_LENGTH = 10
	} else {
		conv, err = strconv.ParseInt(fetch_len_str, 10, 32)
		if err != nil {
			return err
		}
		if conv < 1 {
			return errors.New("FETCH_LENGTH should be a positive number as well over 0")
		}
		FETCH_LENGTH = int32(conv)

	}
	prefork_str := os.Getenv("PREFORK")
	if len(prefork_str) == 0 {
		PREFORK = false
	} else {
		PREFORK, err = strconv.ParseBool(prefork_str)
		if err != nil {
			return err
		}
	}
	IGAPI_HOST = os.Getenv("IGAPI_HOST")
	IGAPI_ACTIVATE = true
	if len(IGAPI_HOST) == 0 {
		log.Println("Didn't get IGAPI_HOST, it will work without it")
		IGAPI_ACTIVATE = false
	}
	CORS_ALLOW = os.Getenv("CORS_ALLOW")
	return nil
}

func IGAPI_establish() (*grpc.ClientConn, igapi.IGAPIClient) {
	conn, err := grpc.NewClient(IGAPI_HOST)
	if err != nil {
		log.Panicf("Can't connect to igapi: %s", err.Error())
	}
	c := igapi.NewIGAPIClient(conn)
	return conn, c
}
func IGAPI_chan_exec(c igapi.IGAPIClient) {
	for id := range IGAPI_CHAN {
		if id.ACT_TYPE == 0 {
			c.Upload(context.Background(), &igapi.Request{Id: int64(id.ID)})
		}
		if id.ACT_TYPE == 1 {
			c.Delete(context.Background(), &igapi.Request{Id: int64(id.ID)})
		}
	}
}