package roomadmin

import (
	"encoding/json"
	"errors"
	"reflect"
	"testing"
)

func TestNormalizeRoomConfigSortsAndKeepsFixedCandidates(t *testing.T) {
	config, err := normalizeRoomConfig(RoomConfig{
		AllowedSeatCounts: []int32{30, 10, 20},
		DefaultSeatCount:  20,
		UpdatedAtMS:       123,
	})
	if err != nil {
		t.Fatalf("normalizeRoomConfig failed: %v", err)
	}
	if !reflect.DeepEqual(config.CandidateSeatCounts, []int32{10, 15, 20, 25, 30}) {
		t.Fatalf("candidate seat counts mismatch: %+v", config.CandidateSeatCounts)
	}
	if !reflect.DeepEqual(config.AllowedSeatCounts, []int32{10, 20, 30}) {
		t.Fatalf("allowed seat counts should be sorted: %+v", config.AllowedSeatCounts)
	}
	if config.DefaultSeatCount != 20 || config.UpdatedAtMS != 123 {
		t.Fatalf("config fields changed unexpectedly: %+v", config)
	}
}

func TestNormalizeRoomConfigRejectsInvalidValues(t *testing.T) {
	tests := []struct {
		name   string
		config RoomConfig
	}{
		{name: "empty", config: RoomConfig{AllowedSeatCounts: nil, DefaultSeatCount: 15}},
		{name: "duplicate", config: RoomConfig{AllowedSeatCounts: []int32{10, 10}, DefaultSeatCount: 10}},
		{name: "outside_candidate", config: RoomConfig{AllowedSeatCounts: []int32{12}, DefaultSeatCount: 12}},
		{name: "default_not_allowed", config: RoomConfig{AllowedSeatCounts: []int32{10, 20}, DefaultSeatCount: 15}},
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			_, err := normalizeRoomConfig(test.config)
			if !errors.Is(err, ErrInvalidArgument) {
				t.Fatalf("normalizeRoomConfig should reject %s with ErrInvalidArgument, got %v", test.name, err)
			}
		})
	}
}

func TestHumanRoomRobotAllowedOwnerIDsAcceptsCommaStringAndArray(t *testing.T) {
	for _, test := range []struct {
		name string
		body string
		want []string
	}{
		{name: "comma_string", body: `{"allowedOwnerIds":"1001, 1002,,1001"}`, want: []string{"1001", "1002"}},
		{name: "array", body: `{"allowedOwnerIds":["1003"," 1004 ","1003"]}`, want: []string{"1003", "1004"}},
	} {
		t.Run(test.name, func(t *testing.T) {
			var req updateHumanRoomRobotConfigRequest
			if err := json.Unmarshal([]byte(test.body), &req); err != nil {
				t.Fatalf("unmarshal human room robot config failed: %v", err)
			}
			if got := normalizeStringList([]string(req.AllowedOwnerIDs)); !reflect.DeepEqual(got, test.want) {
				t.Fatalf("allowed owner ids mismatch: got %+v want %+v", got, test.want)
			}
		})
	}
}

func TestHumanRoomRobotCountryRulesDecode(t *testing.T) {
	var req updateHumanRoomRobotConfigRequest
	if err := json.Unmarshal([]byte(`{"countryLimitEnabled":true,"countryRules":[{"countryCode":"sa","maxRoomCount":2,"allowedOwnerIds":"1001, 1002,,1001"}]}`), &req); err != nil {
		t.Fatalf("unmarshal human room robot country rules failed: %v", err)
	}
	if !req.CountryLimitEnabled || len(req.CountryRules) != 1 {
		t.Fatalf("country rules not decoded: %+v", req)
	}
	if req.CountryRules[0].CountryCode != "sa" || req.CountryRules[0].MaxRoomCount != 2 {
		t.Fatalf("country rule mismatch: %+v", req.CountryRules[0])
	}
	if got := normalizeStringList([]string(req.CountryRules[0].AllowedOwnerIDs)); !reflect.DeepEqual(got, []string{"1001", "1002"}) {
		t.Fatalf("country rule allowed owner ids mismatch: %+v", got)
	}
}
