package main

import (
	"bytes"
	"encoding/json"
	"os"
	"os/exec"
	"path/filepath"
	"testing"
)

func TestCustomSchemeCanBeFavoritedAndAppliedToApps(t *testing.T) {
	tinty, err := exec.LookPath("tinty")
	if err != nil {
		t.Skip("requires tinty 0.34+")
	}
	home := t.TempDir()
	data := filepath.Join(home, "data")
	bin := filepath.Join(home, "bin")
	for _, dir := range []string{bin, filepath.Join(data, "repos", "schemes", "base16"), filepath.Join(data, "custom-schemes", "base16"), filepath.Join(home, ".config", "herdr")} {
		if err := os.MkdirAll(dir, 0o755); err != nil {
			t.Fatal(err)
		}
	}
	palette, err := os.ReadFile("schemes/base16/terebi-sunset.yaml")
	if err != nil {
		t.Fatal(err)
	}
	files := map[string][]byte{
		filepath.Join(data, "custom-schemes", "base16", "terebi-sunset.yaml"): palette,
		filepath.Join(home, "config.toml"):                                    []byte("items = []\n"),
		filepath.Join(home, ".config", "herdr", "config.toml"):                []byte("[server]\nport = 8080\n"),
		filepath.Join(home, "zed.json"):                                       []byte(`{"name":"Terebi Sunset","themes":[{"name":"Terebi Sunset","appearance":"dark"}]}`),
	}
	for path, contents := range files {
		if err := os.WriteFile(path, contents, 0o644); err != nil {
			t.Fatal(err)
		}
	}
	writeExecutable(t, filepath.Join(bin, "tinty"), `#!/bin/sh
exec "$TINTY_TEST_BINARY" --data-dir "$TINTY_TEST_DATA" --config "$TINTY_TEST_CONFIG" "$@"
`)
	t.Setenv("HOME", home)
	t.Setenv("XDG_CONFIG_HOME", filepath.Join(home, ".config"))
	t.Setenv("PATH", bin+":/usr/bin:/bin")
	t.Setenv("TINTY_TEST_BINARY", tinty)
	t.Setenv("TINTY_TEST_DATA", data)
	t.Setenv("TINTY_TEST_CONFIG", filepath.Join(home, "config.toml"))
	statePath := filepath.Join(home, "state.toml")
	t.Setenv("TINT_STATE_FILE", statePath)
	initial := state{Current: currentPair{Light: "personal-light", Dark: "personal-dark"}}
	if err := saveState(statePath, initial); err != nil {
		t.Fatal(err)
	}
	var stdout, stderr bytes.Buffer
	if err := runCLI([]string{"favorite", "base16-terebi-sunset"}, &stdout, &stderr); err != nil {
		t.Fatalf("custom scheme could not be favorited: %v: %s", err, stderr.String())
	}
	value, err := loadState(statePath)
	if err != nil {
		t.Fatal(err)
	}
	if value.Current != initial.Current || len(value.Catalog.FavoriteThemes) != 1 || value.Catalog.FavoriteThemes[0] != "base16-terebi-sunset" {
		t.Fatalf("favorite changed the current pair or omitted the scheme: %#v", value)
	}
	before := readFile(t, statePath)
	if err := runCLI([]string{"favorite", "base16-missing"}, &stdout, &stderr); err == nil {
		t.Fatal("accepted a nonexistent custom scheme")
	}
	if readFile(t, statePath) != before {
		t.Fatal("invalid scheme changed saved state")
	}
	if output, err := exec.Command("tinty", "apply", "base16-terebi-sunset").CombinedOutput(); err != nil {
		t.Fatalf("Tinty could not apply the custom scheme: %v\n%s", err, output)
	}
	if err := applyApps(filepath.Join(home, "zed.json")); err != nil {
		t.Fatalf("custom scheme could not be applied: %v", err)
	}
	var omp struct {
		Colors map[string]string `json:"colors"`
	}
	if err := json.Unmarshal([]byte(readFile(t, filepath.Join(home, ".omp", "agent", "themes", "tinty-current.json"))), &omp); err != nil {
		t.Fatal(err)
	}
	if omp.Colors["text"] != "#ffe3b5" || omp.Colors["syntaxNumber"] != "#f2943b" {
		t.Fatalf("OMP did not receive the custom scheme: %#v", omp.Colors)
	}
	var conjure struct {
		Variant string            `json:"variant"`
		Colors  map[string]string `json:"colors"`
	}
	if err := json.Unmarshal([]byte(readFile(t, filepath.Join(home, ".config", "conjure", "theme.json"))), &conjure); err != nil {
		t.Fatal(err)
	}
	if conjure.Variant != "dark" || conjure.Colors["background"] != "#1f1714" || conjure.Colors["secondaryText"] != "#d9c7a6" {
		t.Fatalf("Conjure did not receive the custom scheme: %#v", conjure)
	}
}