ratatoskr-go/internal/config/config_test.go

package config

import (
	"os"
	"path/filepath"
	"strings"
	"testing"
	"time"
)

func writeCfg(t *testing.T, content string) string {
	t.Helper()
	f, err := os.CreateTemp(t.TempDir(), "cfg*.yaml")
	if err != nil {
		t.Fatalf("temp: %v", err)
	}
	if _, err := f.WriteString(content); err != nil {
		t.Fatalf("write: %v", err)
	}
	f.Close()
	return f.Name()
}

func TestLoad_FullConfig(t *testing.T) {
	t.Setenv("TG_TOKEN", "tok123")

	yaml := `
telegram:
  token: "${TG_TOKEN}"
  chat_id: "123"

opencode:
  bin: "my-opencode"
  hard_timeout: "10m"
`
	path := writeCfg(t, yaml)
	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	if cfg.Telegram.Token != "tok123" {
		t.Errorf("tg token = %q", cfg.Telegram.Token)
	}
	if cfg.Telegram.ChatID != "123" {
		t.Errorf("tg chat_id = %q", cfg.Telegram.ChatID)
	}
	if cfg.OpenCode.Bin != "my-opencode" {
		t.Errorf("opencode bin = %q", cfg.OpenCode.Bin)
	}
	if cfg.OpenCode.HardTimeout.Duration() != 10*time.Minute {
		t.Errorf("hard timeout = %v", cfg.OpenCode.HardTimeout)
	}
}

func TestLoad_Defaults(t *testing.T) {
	t.Setenv("TG_TOKEN", "tok")
	t.Setenv("TG_CHAT_ID", "42")

	yaml := `
telegram:
  token: "${TG_TOKEN}"
  chat_id: "${TG_CHAT_ID}"
`
	path := writeCfg(t, yaml)
	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	// default opencode.bin
	if cfg.OpenCode.Bin != "opencode" {
		t.Errorf("bin = %q, want opencode", cfg.OpenCode.Bin)
	}
	if cfg.OpenCode.HardTimeout.Duration() != 20*time.Minute {
		t.Errorf("hard timeout = %v", cfg.OpenCode.HardTimeout)
	}
	if cfg.OpenCode.IdleTimeout.Duration() != 5*time.Minute {
		t.Errorf("idle timeout = %v", cfg.OpenCode.IdleTimeout)
	}
	if cfg.Paths.Worktree != "./worktrees" {
		t.Errorf("worktree = %q, want ./worktrees", cfg.Paths.Worktree)
	}
}

func TestLoad_OpenCodeConfigDir(t *testing.T) {
	t.Setenv("TG_TOKEN", "tok")
	t.Setenv("TG_CHAT_ID", "42")

	// без config_dir — пусто
	yaml := `telegram:
  token: "${TG_TOKEN}"
  chat_id: "${TG_CHAT_ID}"
`
	cfg, err := Load(writeCfg(t, yaml))
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	if cfg.OpenCode.ConfigDir != "" {
		t.Errorf("config_dir = %q, want пусто", cfg.OpenCode.ConfigDir)
	}

	// через env OPENCODE_CONFIG_DIR
	t.Setenv("OPENCODE_CONFIG_DIR", "/opt/agents")
	cfg, err = Load(writeCfg(t, yaml))
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	if cfg.OpenCode.ConfigDir != "/opt/agents" {
		t.Errorf("config_dir = %q, want /opt/agents", cfg.OpenCode.ConfigDir)
	}
}

func TestLoad_EnvOverride(t *testing.T) {
	t.Setenv("TG_TOKEN", "tok")
	t.Setenv("TG_CHAT_ID", "42")
	// env override для opencode.timeout
	t.Setenv("OPENCODE_CONFIG", "/custom/opencode.json")

	yaml := `telegram:
  token: "${TG_TOKEN}"
  chat_id: "${TG_CHAT_ID}"
`
	path := writeCfg(t, yaml)
	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	if cfg.OpenCode.Config != "/custom/opencode.json" {
		t.Errorf("opencode config = %q", cfg.OpenCode.Config)
	}
}

func TestLoad_MissingEnvVarUsesDefault(t *testing.T) {
	t.Setenv("TG_TOKEN", "tok")
	t.Setenv("TG_CHAT_ID", "42")

	yaml := `telegram:
  token: "${TG_TOKEN}"
  chat_id: "${TG_CHAT_ID}"
opencode:
  db_path: "${OPENCODE_DB:-/default/db.sqlite}"
`
	path := writeCfg(t, yaml)
	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	if cfg.OpenCode.DBPath != "/default/db.sqlite" {
		t.Errorf("db_path = %q, want /default/db.sqlite", cfg.OpenCode.DBPath)
	}
}

func TestLoad_FileNotFound(t *testing.T) {
	_, err := Load("/nonexistent/config.yaml")
	if err == nil || !strings.Contains(err.Error(), "file not found") {
		t.Fatalf("ожидалась ошибка file not found, got %v", err)
	}
}

func TestResolveExePaths_RelativeToExe(t *testing.T) {
	t.Setenv("TG_TOKEN", "tok")
	t.Setenv("TG_CHAT_ID", "42")

	yaml := `telegram:
  token: "${TG_TOKEN}"
  chat_id: "${TG_CHAT_ID}"
paths:
  db: "./ratatoskr.db"
  worktree: "./worktrees"
`
	cfg, err := Load(writeCfg(t, yaml))
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	cfg.ResolveExePaths()

	base := ExeDir()
	if cfg.Paths.DB != filepath.Join(base, "ratatoskr.db") {
		t.Errorf("db = %q, want %q", cfg.Paths.DB, filepath.Join(base, "ratatoskr.db"))
	}
	if cfg.Paths.Worktree != filepath.Join(base, "worktrees") {
		t.Errorf("worktree = %q, want %q", cfg.Paths.Worktree, filepath.Join(base, "worktrees"))
	}
}

func TestResolveExePaths_AbsoluteKept(t *testing.T) {
	t.Setenv("TG_TOKEN", "tok")
	t.Setenv("TG_CHAT_ID", "42")

	absDB := filepath.Join(string(filepath.Separator), "data", "ratatoskr.db") // абсолютный для текущей ОС
	absWt := filepath.Join(string(filepath.Separator), "worktrees")
	yaml := `telegram:
  username: "${TG_TOKEN}"
  chat_id: "${TG_CHAT_ID}"
paths:
  db: "` + absDB + `"
  worktree: "` + absWt + `"
`
	cfg, err := Load(writeCfg(t, yaml))
	if err != nil {
		t.Fatalf("Load: %v", err)
	}
	cfg.ResolveExePaths()
	if cfg.Paths.DB != absDB {
		t.Errorf("db = %q, want абсолютный путь сохранён %q", cfg.Paths.DB, absDB)
	}
	if cfg.Paths.Worktree != absWt {
		t.Errorf("worktree = %q, want абсолютный путь сохранён %q", cfg.Paths.Worktree, absWt)
	}
}

func TestLoad_MissingRequired(t *testing.T) {
	// пустой конфиг — все обязательные поля отсутствуют
	t.Setenv("TG_TOKEN", "")
	t.Setenv("TG_CHAT_ID", "")

	yaml := `telegram:
  token: ""
  chat_id: ""
`
	path := writeCfg(t, yaml)
	_, err := Load(path)
	if err == nil {
		t.Fatal("ожидалась ошибка валидации")
	}
	if !strings.Contains(err.Error(), "telegram.token") {
		t.Errorf("ожидалось telegram.token в ошибке, got %v", err)
	}
	if !strings.Contains(err.Error(), "telegram.chat_id") {
		t.Errorf("ожидалось telegram.chat_id в ошибке, got %v", err)
	}
}

func TestLoad_InvalidDuration(t *testing.T) {
	t.Setenv("TG_TOKEN", "x")
	t.Setenv("TG_CHAT_ID", "x")

	yaml := `telegram:
  token: "x"
  chat_id: "x"
opencode:
  hard_timeout: "не-длительность"
`
	path := writeCfg(t, yaml)
	_, err := Load(path)
	if err == nil || !strings.Contains(err.Error(), "parse duration") {
		t.Fatalf("ожидалась ошибка парсинга duration, got %v", err)
	}
}