package config

import (
	"os"
	"path/filepath"
	"reflect"
	"testing"
)

func TestDefaultAllowedOrigins(t *testing.T) {
	if got := Default().Server.AllowedOrigins; len(got) != 0 {
		t.Fatalf("默认白名单应为空: %v", got)
	}
}

func TestLoadAllowedOrigins(t *testing.T) {
	path := filepath.Join(t.TempDir(), "config.yaml")
	raw := "server:\n  allowedOrigins:\n    - http://a.example\n    - https://b.example\n"
	if err := os.WriteFile(path, []byte(raw), 0o644); err != nil {
		t.Fatalf("写入配置: %v", err)
	}

	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("加载配置: %v", err)
	}
	want := []string{"http://a.example", "https://b.example"}
	if !reflect.DeepEqual(cfg.Server.AllowedOrigins, want) {
		t.Fatalf("白名单解析错误: got %v want %v", cfg.Server.AllowedOrigins, want)
	}
}

// -data 只在非空时覆盖配置：不传与传空串都必须保持配置文件里的值，
// 否则 Console 之外的便携/手工运行会被改写数据目录。
func TestApplyDataDir(t *testing.T) {
	cases := []struct {
		name    string
		dir     string
		want    string
		applied bool
	}{
		{"非空覆盖配置值", `/var/lib/scoreboard`, `/var/lib/scoreboard`, true},
		{"两侧空白会被去掉", "  /var/lib/scoreboard  ", `/var/lib/scoreboard`, true},
		{"空串保持配置值", "", "cfg-data", false},
		{"纯空白等于不传", "   ", "cfg-data", false},
	}
	for _, tc := range cases {
		t.Run(tc.name, func(t *testing.T) {
			path := filepath.Join(t.TempDir(), "config.yaml")
			if err := os.WriteFile(path, []byte("dataDir: cfg-data\nserver:\n  port: 19540\n"), 0o644); err != nil {
				t.Fatalf("写入配置: %v", err)
			}
			cfg, err := Load(path)
			if err != nil {
				t.Fatalf("加载配置: %v", err)
			}
			if got := cfg.ApplyDataDir(tc.dir); got != tc.applied {
				t.Fatalf("ApplyDataDir(%q) 覆盖标记: got %v want %v", tc.dir, got, tc.applied)
			}
			if cfg.DataDir != tc.want {
				t.Fatalf("ApplyDataDir(%q) 后 DataDir: got %q want %q", tc.dir, cfg.DataDir, tc.want)
			}
		})
	}
}

// 日志配置：默认值开箱即用，配了 log.dir 就按它走，不配就落在 <dataDir>/logs。
func TestLogConfigDefaultsAndDirPath(t *testing.T) {
	def := Default().Log
	if def.Level != "info" {
		t.Fatalf("默认级别应为 info，得到 %q", def.Level)
	}
	if def.MaxSizeMB <= 0 || def.KeepFiles <= 0 {
		t.Fatalf("大小上限与保留份数都要有默认值，得到 %+v", def)
	}
	if got := def.DirPath("/data/sb"); got != filepath.Join("/data/sb", "logs") {
		t.Fatalf("未配 dir 时应落在数据目录下的 logs，得到 %q", got)
	}

	path := filepath.Join(t.TempDir(), "config.yaml")
	raw := "log:\n  level: warn\n  dir: /var/log/scoreboard\n  maxSizeMB: 5\n  keepFiles: 3\n"
	if err := os.WriteFile(path, []byte(raw), 0o644); err != nil {
		t.Fatalf("写入配置: %v", err)
	}
	cfg, err := Load(path)
	if err != nil {
		t.Fatalf("加载配置: %v", err)
	}
	if cfg.Log.Level != "warn" || cfg.Log.MaxSizeMB != 5 || cfg.Log.KeepFiles != 3 {
		t.Fatalf("log 段解析错误: %+v", cfg.Log)
	}
	if got := cfg.Log.DirPath("/data/sb"); got != "/var/log/scoreboard" {
		t.Fatalf("配了 dir 就该用它，得到 %q", got)
	}
}