package config

import "testing"

func TestLoadRequiresDatabaseURL(t *testing.T) {
	t.Setenv("DATABASE_URL", "")
	if _, err := Load(); err == nil {
		t.Fatal("Load() error = nil, want required database url error")
	}
}

func TestValidateAPIRequiresLongSecret(t *testing.T) {
	t.Parallel()
	cfg := Config{SessionSecret: "short", CursorSecret: "cursor-secret-that-is-at-least-32-bytes"}
	if err := cfg.ValidateAPI(); err == nil {
		t.Fatal("ValidateAPI() error = nil, want secret length error")
	}
}

func TestValidateAPIRequiresLongCursorSecret(t *testing.T) {
	t.Parallel()
	cfg := Config{SessionSecret: "session-secret-that-is-at-least-32-bytes", CursorSecret: "short"}
	if err := cfg.ValidateAPI(); err == nil {
		t.Fatal("ValidateAPI() error = nil, want cursor secret length error")
	}
}

func TestValidateAPIRequiresIndependentCursorSecret(t *testing.T) {
	t.Parallel()
	secret := "shared-secret-that-is-at-least-32-characters"
	cfg := Config{SessionSecret: secret, CursorSecret: secret}
	if err := cfg.ValidateAPI(); err == nil {
		t.Fatal("ValidateAPI() error = nil, want independent secrets error")
	}
}

func TestValidateAPIRequiresGrowthBudgetsInProduction(t *testing.T) {
	t.Parallel()
	cfg := Config{SessionSecret: "session-secret-that-is-at-least-32-bytes", CursorSecret: "cursor-secret-that-is-at-least-32-bytes", AppEnv: "production", AIGrowthEnabled: true, AvalAIAPIKey: "key", AvalAIModel: "model", AIMaxConcurrent: 4, AICreatePerMinute: 10, AIUncachedScopesPerDay: 5}
	if err := cfg.ValidateAPI(); err == nil {
		t.Fatal("ValidateAPI() error = nil, want AI budget error")
	}
	cfg.AIDailyRequestBudget, cfg.AIDailyTokenBudget = 10, 10_000
	if err := cfg.ValidateAPI(); err != nil {
		t.Fatalf("ValidateAPI() error = %v", err)
	}
}

func TestLoadGrowthDefaultsAreCostSafe(t *testing.T) {
	t.Setenv("DATABASE_URL", "postgresql://example")
	cfg, err := Load()
	if err != nil {
		t.Fatal(err)
	}
	if cfg.AIGrowthEnabled || cfg.AIDailyRequestBudget != 0 || cfg.AIDailyTokenBudget != 0 || cfg.AIMaxConcurrent != 4 {
		t.Fatalf("unsafe AI defaults: %+v", cfg)
	}
}