package dbx

import (
	"testing"
	"time"
)

func TestConfigDefaults(t *testing.T) {
	cfg := Config{}
	cfg.defaults()

	if cfg.Logger == nil {
		t.Error("Logger should not be nil after defaults")
	}
	if cfg.Retry.MaxAttempts != 3 {
		t.Errorf("MaxAttempts = %d, want 3", cfg.Retry.MaxAttempts)
	}
	if cfg.Retry.BaseDelay != 50*time.Millisecond {
		t.Errorf("BaseDelay = %v, want 50ms", cfg.Retry.BaseDelay)
	}
	if cfg.Retry.MaxDelay != time.Second {
		t.Errorf("MaxDelay = %v, want 1s", cfg.Retry.MaxDelay)
	}
	if cfg.HealthCheck.Interval != 5*time.Second {
		t.Errorf("HealthCheck.Interval = %v, want 5s", cfg.HealthCheck.Interval)
	}
	if cfg.HealthCheck.Timeout != 2*time.Second {
		t.Errorf("HealthCheck.Timeout = %v, want 2s", cfg.HealthCheck.Timeout)
	}
	if cfg.Master.Name != "master" {
		t.Errorf("Master.Name = %q, want %q", cfg.Master.Name, "master")
	}
}

func TestConfigDefaultsReplicaNames(t *testing.T) {
	cfg := Config{
		Replicas: []NodeConfig{
			{DSN: "a"},
			{Name: "custom", DSN: "b"},
			{DSN: "c"},
		},
	}
	cfg.defaults()

	if cfg.Replicas[0].Name != "replica-1" {
		t.Errorf("Replica[0].Name = %q, want %q", cfg.Replicas[0].Name, "replica-1")
	}
	if cfg.Replicas[1].Name != "custom" {
		t.Errorf("Replica[1].Name = %q, want %q", cfg.Replicas[1].Name, "custom")
	}
	if cfg.Replicas[2].Name != "replica-3" {
		t.Errorf("Replica[2].Name = %q, want %q", cfg.Replicas[2].Name, "replica-3")
	}
}

func TestConfigDefaultsNoOverwrite(t *testing.T) {
	cfg := Config{
		Retry: RetryConfig{
			MaxAttempts: 5,
			BaseDelay:   100 * time.Millisecond,
			MaxDelay:    2 * time.Second,
		},
	}
	cfg.defaults()

	if cfg.Retry.MaxAttempts != 5 {
		t.Errorf("MaxAttempts = %d, want 5", cfg.Retry.MaxAttempts)
	}
	if cfg.Retry.BaseDelay != 100*time.Millisecond {
		t.Errorf("BaseDelay = %v, want 100ms", cfg.Retry.BaseDelay)
	}
}