package zombie

import (
	"github.com/wahyd4/zombie/models"
	"reflect"
	"testing"
)

func TestInit(t *testing.T) {
	type args struct {
		input string
	}
	tests := []struct {
		name    string
		args    args
		want    *Application
		wantErr bool
	}{
		{
			"can parse the input data file and init an application",
			args{input: "test_data/input_test.txt"},
			&Application{
				gridSize: 4,
				currentZombie: &models.Zombie{
					GridSize: 4,
					Coordinate: models.Coordinate{
						XAxis: 2,
						YAxis: 1,
					},
				},
				creatures: []*models.Creature{
					&models.Creature{Coordinate: models.Coordinate{0, 1}},
					&models.Creature{Coordinate: models.Coordinate{XAxis: 1, YAxis: 2}},
					&models.Creature{Coordinate: models.Coordinate{XAxis: 3, YAxis: 1}},
				},
				commands: []MoveCommand{
					&MoveDownCommand{},
					&MoveLeftCommand{},
					&MoveUpCommand{},
					&MoveUpCommand{},
					&MoveRightCommand{},
					&MoveRightCommand{},
				},
			},
			false,
		},
		{
			"fail to init application due to file is not found",
			args{input: "test_data/not_exist.txt"},
			nil,
			true,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			got, err := Init(tt.args.input)
			if (err != nil) != tt.wantErr {
				t.Errorf("Init() error = %v, wantErr %v", err, tt.wantErr)
				return
			}
			if !reflect.DeepEqual(got, tt.want) {
				t.Errorf("Init() got = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_parseCoordinate(t *testing.T) {
	type args struct {
		coordinate string
	}
	tests := []struct {
		name string
		args args
		want models.Coordinate
	}{
		{
			"can parse a valid coordinate string",
			args{coordinate: "(2,3)"},
			models.Coordinate{
				XAxis: 2,
				YAxis: 3,
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := parseCoordinate(tt.args.coordinate); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("parseCoordinate() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_parseCreatures(t *testing.T) {
	type args struct {
		coordinates string
	}
	tests := []struct {
		name string
		args args
		want []*models.Creature
	}{
		{
			"can parse all the creatures from string",
			args{"(0,1)"},
			[]*models.Creature{
				&models.Creature{Coordinate: models.Coordinate{0, 1}},
			},
		},
		{
			"can parse all the creatures from string",
			args{"(0,1) (1,2) (3,1)"},
			[]*models.Creature{
				&models.Creature{Coordinate: models.Coordinate{0, 1}},
				&models.Creature{Coordinate: models.Coordinate{1, 2}},
				&models.Creature{Coordinate: models.Coordinate{3, 1}},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := parseCreatures(tt.args.coordinates); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("parseCreatures() = %v, want %v", got, tt.want)
			}
		})
	}
}

func Test_parseCommands(t *testing.T) {
	type args struct {
		commandString string
	}
	tests := []struct {
		name string
		args args
		want []MoveCommand
	}{
		{
			"can parse the commands string into commands",
			args{"LRRUD"},
			[]MoveCommand{
				&MoveLeftCommand{},
				&MoveRightCommand{},
				&MoveRightCommand{},
				&MoveUpCommand{},
				&MoveDownCommand{},
			},
		},
		{
			"can parse the commands string into commands",
			args{"RRUU"},
			[]MoveCommand{
				&MoveRightCommand{},
				&MoveRightCommand{},
				&MoveUpCommand{},
				&MoveUpCommand{},
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := parseCommands(tt.args.commandString); !reflect.DeepEqual(got, tt.want) {
				t.Errorf("parseCommands() = %v, want %v", got, tt.want)
			}
		})
	}
}