package config

import (
	"strings"
	"testing"
)

func TestValidateRejectsDeprecatedTinodeDatabase(t *testing.T) {
	cfg := defaultConfig()
	cfg.MySQL.DSN = "root:root@tcp(127.0.0.1:3306)/tinode?parseTime=true"

	err := cfg.validate()
	if err == nil || !strings.Contains(err.Error(), "tinode is deprecated") {
		t.Fatalf("validate() error = %v, want deprecated database error", err)
	}
}

func TestDefaultConfigUsesMeetingIMDatabase(t *testing.T) {
	cfg := defaultConfig()
	if err := cfg.validate(); err != nil {
		t.Fatalf("default config validation failed: %v", err)
	}
	if !strings.Contains(cfg.MySQL.DSN, "/meeting_im?") {
		t.Fatalf("default mysql dsn = %q, want meeting_im database", cfg.MySQL.DSN)
	}
	if cfg.MySQL.MaxOpenConns != 15 || cfg.MySQL.MaxIdleConns != 5 {
		t.Fatalf("default mysql pool = %d/%d, want 15/5", cfg.MySQL.MaxOpenConns, cfg.MySQL.MaxIdleConns)
	}
}

func TestApplyEnvOverridesMySQLPool(t *testing.T) {
	t.Setenv("IM_WORKBENCH_MYSQL_MAX_OPEN_CONNS", "12")
	t.Setenv("IM_WORKBENCH_MYSQL_MAX_IDLE_CONNS", "4")
	cfg := defaultConfig()

	applyEnv(cfg)

	if cfg.MySQL.MaxOpenConns != 12 || cfg.MySQL.MaxIdleConns != 4 {
		t.Fatalf("mysql pool = %d/%d, want 12/4", cfg.MySQL.MaxOpenConns, cfg.MySQL.MaxIdleConns)
	}
}