package game_test

import (
	"slices"
	"testing"

	e "github.com/iliadenisov/galaxy/internal/error"
	"github.com/iliadenisov/galaxy/internal/model/game"
	"github.com/stretchr/testify/assert"
)

func TestBlockUpgradeCost(t *testing.T) {
	assert.Equal(t, 00.0, game.BlockUpgradeCost(1, 1.0, 1.0))
	assert.Equal(t, 25.0, game.BlockUpgradeCost(5, 1.0, 2.0))
	assert.Equal(t, 50.0, game.BlockUpgradeCost(10, 1.0, 2.0))
}

func TestGroupUpgradeCost(t *testing.T) {
	sg := game.ShipGroup{
		Tech: map[game.Tech]float64{
			game.TechDrive:   1.0,
			game.TechWeapons: 1.0,
			game.TechShields: 1.0,
			game.TechCargo:   1.0,
		},
		Number: 1,
	}
	assert.Equal(t, 225.0, game.GroupUpgradeCost(sg, Cruiser, 2.0, 2.0, 2.0, 2.0).UpgradeCost(1))
}

func TestUpgradeMaxShips(t *testing.T) {
	sg := game.ShipGroup{
		Tech: map[game.Tech]float64{
			game.TechDrive:   1.0,
			game.TechWeapons: 1.0,
			game.TechShields: 1.0,
			game.TechCargo:   1.0,
		},
		Number: 10,
	}
	uc := game.GroupUpgradeCost(sg, Cruiser, 2.0, 2.0, 2.0, 2.0)
	assert.Equal(t, uint(4), uc.UpgradeMaxShips(1000))
}

func TestCurrentUpgradingLevel(t *testing.T) {
	sg := &game.ShipGroup{
		StateUpgrade: nil,
	}
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechDrive))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechWeapons))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechShields))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechCargo))

	sg.StateUpgrade = &game.InUpgrade{
		UpgradeTech: []game.UpgradePreference{
			{Tech: game.TechDrive, Level: 1.5, Cost: 100.1},
		},
	}
	assert.Equal(t, 1.5, game.CurrentUpgradingLevel(*sg, game.TechDrive))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechWeapons))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechShields))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechCargo))

	sg.StateUpgrade.UpgradeTech = append(sg.StateUpgrade.UpgradeTech, game.UpgradePreference{Tech: game.TechCargo, Level: 2.2, Cost: 200.2})
	assert.Equal(t, 1.5, game.CurrentUpgradingLevel(*sg, game.TechDrive))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechWeapons))
	assert.Equal(t, 0.0, game.CurrentUpgradingLevel(*sg, game.TechShields))
	assert.Equal(t, 2.2, game.CurrentUpgradingLevel(*sg, game.TechCargo))
}

func TestFutureUpgradeLevel(t *testing.T) {
	assert.Equal(t, 0.0, game.FutureUpgradeLevel(2.0, 2.0, 2.0))
	assert.Equal(t, 0.0, game.FutureUpgradeLevel(2.0, 2.0, 3.0))
	assert.Equal(t, 1.5, game.FutureUpgradeLevel(1.5, 2.0, 3.0))
	assert.Equal(t, 2.0, game.FutureUpgradeLevel(2.5, 1.0, 2.0))
	assert.Equal(t, 2.5, game.FutureUpgradeLevel(2.5, 1.0, 0.0))
}

func TestUpgradeGroupPreference(t *testing.T) {
	sg := game.ShipGroup{
		Number: 4,
		Tech: game.TechSet{
			game.TechDrive:   1.0,
			game.TechWeapons: 1.0,
			game.TechShields: 1.0,
			game.TechCargo:   1.0,
		},
	}
	assert.Nil(t, sg.StateUpgrade)
	sg = game.UpgradeGroupPreference(sg, Cruiser, game.TechDrive, 0)
	assert.Nil(t, sg.StateUpgrade)

	sg = game.UpgradeGroupPreference(sg, Cruiser, game.TechDrive, 2.0)
	assert.NotNil(t, sg.StateUpgrade)
	assert.Equal(t, 300., sg.StateUpgrade.TechCost(game.TechDrive))
	assert.Equal(t, 300., sg.StateUpgrade.Cost())

	sg = game.UpgradeGroupPreference(sg, Cruiser, game.TechWeapons, 2.0)
	assert.NotNil(t, sg.StateUpgrade)
	assert.Equal(t, 300., sg.StateUpgrade.TechCost(game.TechWeapons))
	assert.Equal(t, 600., sg.StateUpgrade.Cost())

	sg = game.UpgradeGroupPreference(sg, Cruiser, game.TechShields, 2.0)
	assert.NotNil(t, sg.StateUpgrade)
	assert.Equal(t, 300., sg.StateUpgrade.TechCost(game.TechShields))
	assert.Equal(t, 900., sg.StateUpgrade.Cost())

	sg = game.UpgradeGroupPreference(sg, Cruiser, game.TechCargo, 2.0)
	assert.NotNil(t, sg.StateUpgrade)
	assert.Equal(t, 0., sg.StateUpgrade.TechCost(game.TechCargo))
	assert.Equal(t, 900., sg.StateUpgrade.Cost())
}

func TestUpgradeGroup(t *testing.T) {
	g := newGame()
	// group #1 - in_orbit, free to upgrade
	assert.NoError(t, g.CreateShips(Race_0_idx, ShipType_Cruiser, R0_Planet_0_num, 10))
	// group #2 - in_space
	assert.NoError(t, g.CreateShips(Race_0_idx, ShipType_Cruiser, R0_Planet_0_num, 1))
	g.ShipGroups[1].StateInSpace = &game.InSpace{Origin: 2, Range: 1.23}
	// group #3 - in_orbit, foreign planet
	assert.NoError(t, g.CreateShips(Race_0_idx, ShipType_Cruiser, R0_Planet_0_num, 1))
	g.ShipGroups[2].Destination = R1_Planet_1_num

	assert.ErrorContains(t,
		g.UpgradeGroup("UnknownRace", 1, "DRIVE", 0, 0),
		e.GenericErrorText(e.ErrInputUnknownRace))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 555, "DRIVE", 0, 0),
		e.GenericErrorText(e.ErrInputEntityNotExists))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 2, "DRIVE", 0, 0),
		e.GenericErrorText(e.ErrShipsBusy))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 3, "DRIVE", 0, 0),
		e.GenericErrorText(e.ErrInputEntityNotOwned))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 1, "GUN", 0, 0),
		e.GenericErrorText(e.ErrInputTechUnknown))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 1, "CARGO", 0, 0),
		e.GenericErrorText(e.ErrInputUpgradeShipTechNotUsed))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 1, "ALL", 0, 2.0),
		e.GenericErrorText(e.ErrInputUpgradeParameterNotAllowed))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 1, "DRIVE", 0, 2.0),
		e.GenericErrorText(e.ErrInputUpgradeTechLevelInsufficient))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 1, "DRIVE", 0, 1.1),
		e.GenericErrorText(e.ErrInputUpgradeShipsAlreadyUpToDate))

	g.Race[Race_0_idx].SetTechLevel(game.TechDrive, 10.0)
	assert.Equal(t, 10.0, g.Race[Race_0_idx].TechLevel(game.TechDrive))
	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 1, "DRIVE", 0, 10.0),
		e.GenericErrorText(e.ErrUpgradeInsufficientResources))

	assert.NoError(t, g.UpgradeGroup(Race_0.Name, 1, "DRIVE", 2, 1.2))
	assert.Len(t, slices.Collect(g.ListShipGroups(Race_0_idx)), 4)
	assert.Equal(t, uint(8), g.ShipGroups[0].Number)
	assert.Equal(t, uint(2), g.ShipGroups[3].Number)
	assert.Equal(t, game.StateInOrbit, g.ShipGroups[0].State())
	assert.Equal(t, game.StateUpgrade, g.ShipGroups[3].State())

	assert.ErrorContains(t,
		g.UpgradeGroup(Race_0.Name, 4, "DRIVE", 1, 1.3),
		e.GenericErrorText(e.ErrInputUpgradeGroupBreakNotAllowed))
}