package main

import (
	"path/filepath"
	"testing"

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

func TestSubagentNamesAreAnAdjectiveAndANoun(t *testing.T) {
	for range 100 {
		require.True(t, subagentNameValid(subagentNameRandom()))
	}

	require.True(t, subagentNameValid("GreenOtter"))
	for _, name := range []string{"", "Green", "Greenotter", "greenOtter", "Green-Otter", "GreenOtterX", "OtterGreen", "../GreenOtter"} {
		require.False(t, subagentNameValid(name), name)
	}
}

func TestSubagentCreateDrawsATakenNameAgain(t *testing.T) {
	names := []string{"GreenOtter", "GreenOtter", "BlueFox"}
	subagents := newSubagents(filepath.Join(t.TempDir(), subagentDirName), newTestClock().Now, func() string {
		name := names[0]
		names = names[1:]

		return name
	})

	defer func() {
		require.NoError(t, subagents.Close())
	}()

	first, err := subagents.Create(t.Context())
	require.NoError(t, err)
	require.Equal(t, "GreenOtter", first.name)

	second, err := subagents.Create(t.Context())
	require.NoError(t, err)
	require.Equal(t, "BlueFox", second.name)
	require.DirExists(t, filepath.Join(subagents.dir, "BlueFox"))
}

func TestSubagentLogLastsAfterAClose(t *testing.T) {
	dir := filepath.Join(t.TempDir(), subagentDirName)
	subagents := newSubagents(dir, newTestClock().Now, func() string {
		return "GreenOtter"
	})

	subagent, err := subagents.Create(t.Context())
	require.NoError(t, err)

	for _, message := range [][2]string{{"note", "subagent"}, {"user", "Count the files."}, {"reply", "There are 3."}} {
		_, err = subagent.Append(message[0], message[1])
		require.NoError(t, err)
	}

	require.NoError(t, subagent.Flush(t.Context()))
	require.NoError(t, subagents.Close())

	subagents = newSubagents(dir, newTestClock().Now, subagentNameRandom)
	defer func() {
		require.NoError(t, subagents.Close())
	}()

	subagent, err = subagents.Get(t.Context(), "GreenOtter")
	require.NoError(t, err)

	again, err := subagents.Get(t.Context(), "GreenOtter")
	require.NoError(t, err)
	require.Same(t, subagent, again)

	text, err := subagent.Show()
	require.NoError(t, err)
	require.Equal(t, "0|note: subagent\n\n1|user: Count the files.\n\n2|reply: There are 3.", text)
}

func TestSubagentGetRefusesAnUnknownName(t *testing.T) {
	subagents := newTestSubagents(t)
	for _, name := range []string{"BlueFox", "../agent", "Blue"} {
		_, err := subagents.Get(t.Context(), name)
		require.EqualError(t, err, "no agent "+name)
	}
}