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 TestSendFleet(t *testing.T) {
	g := newGame()
	// group #1 - in_orbit Planet_0
	assert.NoError(t, g.CreateShips(Race_0_idx, Race_0_Freighter, R0_Planet_0_num, 1))
	// group #2 - in_space (later)
	assert.NoError(t, g.CreateShips(Race_0_idx, Race_0_Gunship, R0_Planet_0_num, 3))
	// group #3 - in_orbit Planet_0, unmovable
	g.CreateShipType(Race_0.Name, "Fortress", 0, 30, 100, 0, 50)
	assert.NoError(t, g.CreateShips(Race_0_idx, "Fortress", R0_Planet_0_num, 1))
	// group #4 - in_orbit Planet_0
	assert.NoError(t, g.CreateShips(Race_0_idx, Race_0_Gunship, R0_Planet_0_num, 2))

	// ensure race has no Fleets
	assert.Len(t, slices.Collect(g.ListFleets(Race_0_idx)), 0)

	fleetSending := "R0_Fleet_one"
	fleetInSpace := "R0_Fleet_inSpace"
	fleetUnmovable := "R0_Fleet_unmovable"

	assert.NoError(t, g.JoinShipGroupToFleet(Race_0.Name, fleetSending, 1, 0))
	assert.NoError(t, g.JoinShipGroupToFleet(Race_0.Name, fleetSending, 3, 0))

	assert.NoError(t, g.JoinShipGroupToFleet(Race_0.Name, fleetInSpace, 2, 0))
	assert.NoError(t, g.JoinShipGroupToFleet(Race_0.Name, fleetUnmovable, 3, 0))
	// group #2 - in_space
	g.ShipGroups[1].StateInSpace = &game.InSpace{Origin: 2, Range: 1.23}

	assert.ErrorContains(t,
		g.SendFleet("UnknownRace", fleetSending, 2),
		e.GenericErrorText(e.ErrInputUnknownRace))
	assert.ErrorContains(t,
		g.SendFleet(Race_0.Name, "UnknownFleet", 2),
		e.GenericErrorText(e.ErrInputEntityNotExists))
	assert.ErrorContains(t,
		g.SendFleet(Race_0.Name, fleetInSpace, 2),
		e.GenericErrorText(e.ErrShipsBusy))
	assert.ErrorContains(t,
		g.SendFleet(Race_0.Name, fleetSending, 200),
		e.GenericErrorText(e.ErrInputEntityNotExists))
	assert.ErrorContains(t,
		g.SendFleet(Race_0.Name, fleetSending, 3),
		e.GenericErrorText(e.ErrSendUnreachableDestination))
	assert.ErrorContains(t,
		g.SendFleet(Race_0.Name, fleetUnmovable, 2),
		e.GenericErrorText(e.ErrSendShipHasNoDrives))

	assert.NoError(t, g.SendFleet(Race_0.Name, fleetSending, 2))
	fi := slices.IndexFunc(slices.Collect(g.ListFleets(Race_0_idx)), func(f game.Fleet) bool { return f.Name == fleetSending })
	state, _, _ := game.FleetState(g, g.Fleets[fi].ID)
	assert.Equal(t, game.StateLaunched, state)
	for sg := range game.FleetGroups(g, Race_0_idx, fi) {
		assert.Equal(t, game.StateLaunched, sg.State())
	}

	assert.NoError(t, g.SendFleet(Race_0.Name, fleetSending, 0))
	fi = slices.IndexFunc(slices.Collect(g.ListFleets(Race_0_idx)), func(f game.Fleet) bool { return f.Name == fleetSending })
	state, _, _ = game.FleetState(g, g.Fleets[fi].ID)
	assert.Equal(t, game.StateInOrbit, state)
	for sg := range game.FleetGroups(g, Race_0_idx, fi) {
		assert.Equal(t, game.StateInOrbit, sg.State())
	}
}