package main

import (
	"fmt"
	"math/rand/v2"
	"os"
	//"reflect"
	"strconv"
	//"time"
)

var (
	hiddenShips1   [][]string
	revealedShips1 [][]string
	realShips      int = 0
	foundShips     int = 0
)

func fillShips(tiles int) {

	hiddenShips1 = make([][]string, tiles)
	revealedShips1 = make([][]string, tiles)

	for i := 0; i < tiles; i++ {
		hiddenShips1[i] = make([]string, tiles)
		revealedShips1[i] = make([]string, tiles)
	}

	for i := 0; i < len(revealedShips1); i++ {
		for i1 := range revealedShips1[i] {
			shipChance := rand.IntN(3-0) + 0
			if shipChance == 1 {
				revealedShips1[i][i1] = "S"
			} else {
				revealedShips1[i][i1] = "X"
			}
		}
	}

	for i := 0; i < len(hiddenShips1); i++ {
		for i1 := range hiddenShips1[i] {
			hiddenShips1[i][i1] = "_"
		}
	}

}

func singleplayer() {
	fmt.Printf("How many rows/columns would you like to have?\nChoice: ")
	var shipNum int
	fmt.Scanln(&shipNum)
	clear()
	fillShips(shipNum)
	showMatrix(revealedShips1)
	fillRealShips(revealedShips1)
	for {
		clear()
		msg := gameStatus()
		fmt.Println(msg)

		fmt.Printf("X coordinate: ")
		x := scanLine()
		fmt.Printf("Y coordinate: ")
		y := scanLine()
		xint, _ := strconv.Atoi(x)
		yint, _ := strconv.Atoi(y)
		xint--
		yint--
		// bombingText := fmt.Sprintf("Bombing X: %v / Y: %v.", x, y)
		// for i := 0; i < 3; i++ {
		// 	fmt.Printf("\r%v", bombingText)
		// 	time.Sleep(time.Second)
		// 	bombingText = bombingText + "."
		// }
		// go func() {
		// 	fmt.Printf("\nBombed!")
		// 	time.Sleep(time.Second)
		// }()
		checkShip(revealedShips1, hiddenShips1, xint, yint)
		checkWin()
	}

}

func checkShip(visibleMat [][]string, hiddenMat [][]string, x int, y int) {
	if visibleMat[x][y] == "S" {
		hiddenMat[x][y] = "S"
		foundShips++
	} else {
		hiddenMat[x][y] = "X"
	}
}

func fillRealShips(mat [][]string) {
	for i := 0; i < len(mat); i++ {
		for i1 := range mat[i] {
			if mat[i][i1] == "S" {
				realShips++
			}
		}
	}

}

func checkWin() {
	var winStatus bool = realShips == foundShips
	//var winStatus bool = reflect.DeepEqual(revealedShips1, hiddenShips1)
	if winStatus == true {
		clear()
		msg := gameStatus()
		fmt.Print(msg)
		fmt.Println("You win!")
		os.Exit(0)
	}
}

func gameStatus() (msg string) {
	msg = fmt.Sprintln("_ = Unknown")
	msg += fmt.Sprintln("X = Missed")
	msg += fmt.Sprintln("S = Ship")
	msg += fmt.Sprintln("Player 1 (You):")
	msg += fmt.Sprintf("Real ships: %v\nFound ships: %v\n", realShips, foundShips)
	showMatrix(hiddenShips1)

	return msg
}

func showMatrix(mat [][]string) {
	for i := 0; i < len(mat); i++ {
		for _, v := range mat[i] {
			fmt.Printf("%v ", v)
		}
		fmt.Println()
	}
}

func fillMatrix(mat [][]string) {
	for i := 0; i < len(mat); i++ {
		for i1 := range mat[i] {
			shipChance := rand.IntN(3-0) + 0
			if shipChance == 1 {
				mat[i][i1] = "S"
				realShips++
			} else {
				mat[i][i1] = "_"
			}
		}
	}
}