package world

import (
	"testing"

	"github.com/stretchr/testify/require"
)

// requireDrawerCommandNames asserts the exact command sequence recorded
// by fakePrimitiveDrawer.
func requireDrawerCommandNames(t *testing.T, d *fakePrimitiveDrawer, want ...string) {
	t.Helper()

	require.Equal(t, want, d.CommandNames())
}

// requireDrawerCommandCount asserts the number of recorded commands.
func requireDrawerCommandCount(t *testing.T, d *fakePrimitiveDrawer, want int) {
	t.Helper()

	require.Len(t, d.Commands(), want)
}

// requireDrawerCommandAt returns the command at the specified index.
func requireDrawerCommandAt(t *testing.T, d *fakePrimitiveDrawer, index int) fakeDrawerCommand {
	t.Helper()

	cmds := d.Commands()
	require.GreaterOrEqual(t, index, 0)
	require.Less(t, index, len(cmds))

	return cmds[index]
}

// requireDrawerSingleCommand returns the only command with the given name.
func requireDrawerSingleCommand(t *testing.T, d *fakePrimitiveDrawer, name string) fakeDrawerCommand {
	t.Helper()

	cmds := d.CommandsByName(name)
	require.Len(t, cmds, 1)

	return cmds[0]
}

// requireCommandName asserts the command name.
func requireCommandName(t *testing.T, cmd fakeDrawerCommand, want string) {
	t.Helper()

	require.Equal(t, want, cmd.Name)
}

// requireCommandArgs asserts the exact float arguments.
func requireCommandArgs(t *testing.T, cmd fakeDrawerCommand, want ...float64) {
	t.Helper()

	require.Equal(t, want, cmd.Args)
}

// requireCommandArgsInDelta asserts the float arguments with tolerance.
func requireCommandArgsInDelta(t *testing.T, cmd fakeDrawerCommand, delta float64, want ...float64) {
	t.Helper()

	require.Len(t, cmd.Args, len(want))
	for i := range want {
		require.InDelta(t, want[i], cmd.Args[i], delta, "arg index %d", i)
	}
}

// requireCommandClipRects asserts the clip stack snapshot attached to the command.
func requireCommandClipRects(t *testing.T, cmd fakeDrawerCommand, want ...fakeClipRect) {
	t.Helper()

	require.Equal(t, want, cmd.Clips)
}

// requireCommandLineWidth asserts the line width snapshot attached to the command.
func requireCommandLineWidth(t *testing.T, cmd fakeDrawerCommand, want float64) {
	t.Helper()

	require.Equal(t, want, cmd.LineWidth)
}

// requireCommandDashes asserts the dash snapshot attached to the command.
func requireCommandDashes(t *testing.T, cmd fakeDrawerCommand, want ...float64) {
	t.Helper()

	require.Equal(t, want, cmd.Dashes)
}

// requireCommandDashOffset asserts the dash offset snapshot attached to the command.
func requireCommandDashOffset(t *testing.T, cmd fakeDrawerCommand, want float64) {
	t.Helper()

	require.Equal(t, want, cmd.DashOffset)
}