Apply council seat table by sigungu

Tornado3_2026Election/Services/SbsElectionApiClient.cs

@@ -301,10 +301,11 @@ public sealed class SbsElectionApiClient : IDisposable
         foreach (var responseItem in countingItems)
         {
             var item = responseItem.Item;
-            var regionId = item.Region?.Id;
+            var matchedRegionCode = GetCountingRegionMatchKeys(item.Region)
-            if (string.IsNullOrWhiteSpace(regionId) ||
+                .FirstOrDefault(key => districtMap.ContainsKey(key));
-                !districtMap.TryGetValue(regionId, out var districtOption) ||
+            if (string.IsNullOrWhiteSpace(matchedRegionCode) ||
-                !orderMap.TryGetValue(regionId, out var order))
+                !districtMap.TryGetValue(matchedRegionCode, out var districtOption) ||
+                !orderMap.TryGetValue(matchedRegionCode, out var order))
             {
                 continue;
             }
@@ -322,6 +323,179 @@ public sealed class SbsElectionApiClient : IDisposable
             .ToArray();
     }
 
+    public async Task<IReadOnlyList<DistrictSelectionOption>> GetCouncilSeatRegionOptionsAsync(
+        string electionType,
+        IEnumerable<string> regionFilters,
+        CancellationToken cancellationToken)
+    {
+        if (!ElectionConfigurations.TryGetValue(electionType, out var configuration) ||
+            !IsBasicCouncilCountingType(configuration.SungerType))
+        {
+            return Array.Empty<DistrictSelectionOption>();
+        }
+
+        var scopedSidoCodes = ResolveCouncilSeatSidoCodes(configuration.SungerType, regionFilters);
+        var items = await GetCouncilSeatItemsAsync(
+                configuration,
+                scopedSidoCodes,
+                cancellationToken)
+            .ConfigureAwait(false);
+
+        return items
+            .Where(item => item.Sido is not null)
+            .GroupBy(item => FormatSidoCode(item.Sido!.Code), StringComparer.OrdinalIgnoreCase)
+            .Select(group =>
+            {
+                var item = group.First();
+                var code = FormatSidoCode(item.Sido!.Code);
+                var regionName = BuildOutputRegionName(ExpandRegionName(item.Sido.Name));
+                return new
+                {
+                    Order = item.Sido.Order,
+                    Option = new DistrictSelectionOption(
+                        DisplayName: regionName,
+                        DistrictCode: code,
+                        RegionName: regionName,
+                        DistrictName: regionName,
+                        ParentRegionCode: code)
+                };
+            })
+            .OrderBy(item => item.Order > 0 ? item.Order : int.MaxValue)
+            .ThenBy(item => item.Option.RegionName, StringComparer.Ordinal)
+            .Select(item => item.Option)
+            .ToArray();
+    }
+
+    public async Task<IReadOnlyList<DistrictSelectionOption>> GetCouncilSeatSigunguOptionsAsync(
+        string electionType,
+        IEnumerable<string> regionFilters,
+        CancellationToken cancellationToken)
+    {
+        if (!ElectionConfigurations.TryGetValue(electionType, out var configuration) ||
+            !IsBasicCouncilCountingType(configuration.SungerType))
+        {
+            return Array.Empty<DistrictSelectionOption>();
+        }
+
+        var scopedSidoCodes = ResolveCouncilSeatSidoCodes(configuration.SungerType, regionFilters);
+        var items = await GetCouncilSeatItemsAsync(
+                configuration,
+                scopedSidoCodes,
+                cancellationToken)
+            .ConfigureAwait(false);
+
+        return items
+            .Where(item => item.Sido is not null)
+            .SelectMany(item =>
+            {
+                var sidoCode = FormatSidoCode(item.Sido!.Code);
+                var regionName = BuildOutputRegionName(ExpandRegionName(item.Sido.Name));
+                return (item.Sigungus ?? [])
+                    .Where(sigungu => sigungu.Sigungu is not null &&
+                                      !string.IsNullOrWhiteSpace(sigungu.Sigungu.Id))
+                    .Select(sigungu =>
+                    {
+                        var districtName = sigungu.Sigungu!.Name.Trim();
+                        return new
+                        {
+                            SidoOrder = item.Sido.Order,
+                            SigunguOrder = sigungu.Sigungu.Order,
+                            Option = new DistrictSelectionOption(
+                                DisplayName: BuildFullDistrictDisplayName(regionName, districtName),
+                                DistrictCode: sigungu.Sigungu.Id.Trim(),
+                                RegionName: regionName,
+                                DistrictName: districtName,
+                                ParentRegionCode: sidoCode)
+                        };
+                    });
+            })
+            .GroupBy(item => item.Option.DistrictCode, StringComparer.OrdinalIgnoreCase)
+            .Select(group => group.First())
+            .OrderBy(item => item.SidoOrder > 0 ? item.SidoOrder : int.MaxValue)
+            .ThenBy(item => item.SigunguOrder > 0 ? item.SigunguOrder : int.MaxValue)
+            .ThenBy(item => item.Option.DisplayName, StringComparer.Ordinal)
+            .Select(item => item.Option)
+            .ToArray();
+    }
+
+    public async Task<IReadOnlyList<CouncilSeatPartySummary>> GetCouncilSeatSummariesAsync(
+        string electionType,
+        IReadOnlyList<string> sidoCodes,
+        CancellationToken cancellationToken)
+    {
+        return await GetCouncilSeatSummariesAsync(
+                electionType,
+                sidoCodes,
+                Array.Empty<string>(),
+                cancellationToken)
+            .ConfigureAwait(false);
+    }
+
+    public async Task<IReadOnlyList<CouncilSeatPartySummary>> GetCouncilSeatSummariesAsync(
+        string electionType,
+        IReadOnlyList<string> sidoCodes,
+        IReadOnlyList<string> sigunguCodes,
+        CancellationToken cancellationToken)
+    {
+        if (!ElectionConfigurations.TryGetValue(electionType, out var configuration) ||
+            !IsBasicCouncilCountingType(configuration.SungerType))
+        {
+            return Array.Empty<CouncilSeatPartySummary>();
+        }
+
+        var items = await GetCouncilSeatItemsAsync(
+                configuration,
+                sidoCodes,
+                cancellationToken)
+            .ConfigureAwait(false);
+
+        var sigunguCodeSet = NormalizeCouncilSeatSigunguCodes(sigunguCodes);
+        return items
+            .SelectMany(item => ResolveCouncilSeatPartyItems(item, sigunguCodeSet))
+            .GroupBy(item => string.IsNullOrWhiteSpace(item.Id) ? item.Name : item.Id, StringComparer.OrdinalIgnoreCase)
+            .Select(group =>
+            {
+                var first = group.First();
+                return new CouncilSeatPartySummary(
+                    PartyId: first.Id ?? string.Empty,
+                    PartyName: string.IsNullOrWhiteSpace(first.Name) ? "무기타" : first.Name.Trim(),
+                    RegionalSeats: group.Sum(item => Math.Max(0, item.Regional)),
+                    ProportionalSeats: group.Sum(item => Math.Max(0, item.Proportional)),
+                    TotalSeats: group.Sum(item => Math.Max(0, item.Total)));
+            })
+            .Where(row => row.TotalSeats > 0 || row.RegionalSeats > 0 || row.ProportionalSeats > 0)
+            .OrderByDescending(row => row.TotalSeats)
+            .ThenBy(row => row.PartyName, StringComparer.Ordinal)
+            .ToArray();
+    }
+
+    public async Task<CouncilPanseResult?> GetCouncilPanseAsync(
+        string electionType,
+        CancellationToken cancellationToken)
+    {
+        if (!ElectionConfigurations.TryGetValue(electionType, out var configuration) ||
+            !IsBasicCouncilCountingType(configuration.SungerType))
+        {
+            return null;
+        }
+
+        var path = BuildPansePath(configuration);
+        var json = await GetJsonAsync(
+                configuration.BaseUri,
+                path,
+                cancellationToken)
+            .ConfigureAwait(false);
+        var item = JsonSerializer.Deserialize<SbsCouncilPanseItem>(json, SerializerOptions);
+        return item is null
+            ? null
+            : new CouncilPanseResult(
+                item.Minju,
+                item.Kukhim,
+                item.Etc,
+                DateTimeOffset.Now,
+                $"GET /{path}");
+    }
+
     public async Task<TurnoutOverviewResult> GetTurnoutOverviewAsync(
         string electionType,
         IReadOnlyList<DistrictSelectionOption> districts,
@@ -1224,6 +1398,186 @@ public sealed class SbsElectionApiClient : IDisposable
             ? $"{configuration.CountingEndpointSegment}/{configuration.SungerType}/sungergus"
             : $"{configuration.CountingEndpointSegment}/{configuration.SungerType}/sungergus?{query}";
 
+    private static string BuildPansePath(SbsElectionConfiguration configuration)
+        => $"{configuration.CountingEndpointSegment}/{configuration.SungerType}/panse";
+
+    private static string BuildCouncilSeatPath(SbsElectionConfiguration configuration, string query)
+        => string.IsNullOrWhiteSpace(query)
+            ? $"{configuration.CountingEndpointSegment}/{configuration.SungerType}/uiseok"
+            : $"{configuration.CountingEndpointSegment}/{configuration.SungerType}/uiseok?{query}";
+
+    private async Task<IReadOnlyList<SbsCouncilSeatSidoItem>> GetCouncilSeatItemsAsync(
+        SbsElectionConfiguration configuration,
+        IReadOnlyList<string> sidoCodes,
+        CancellationToken cancellationToken)
+    {
+        var normalizedSidoCodes = NormalizeSidoCodes(sidoCodes);
+        if (configuration.SungerType == 5 && normalizedSidoCodes.Count == 0)
+        {
+            return await GetArrayAsync<SbsCouncilSeatSidoItem>(
+                    configuration.BaseUri,
+                    BuildCouncilSeatPath(configuration, string.Empty),
+                    cancellationToken)
+                .ConfigureAwait(false);
+        }
+
+        var querySidoCodes = normalizedSidoCodes.Count > 0
+            ? normalizedSidoCodes
+            : ResolveAllBasicApiSidoCodes();
+        var items = new List<SbsCouncilSeatSidoItem>();
+        var failures = 0;
+        foreach (var sidoCode in querySidoCodes)
+        {
+            try
+            {
+                var path = BuildCouncilSeatPath(
+                    configuration,
+                    $"sidos={Uri.EscapeDataString(sidoCode)}");
+                items.AddRange(await GetArrayAsync<SbsCouncilSeatSidoItem>(
+                        configuration.BaseUri,
+                        path,
+                        cancellationToken)
+                    .ConfigureAwait(false));
+            }
+            catch (HttpRequestException)
+            {
+                failures++;
+            }
+        }
+
+        if (items.Count == 0 && failures > 0)
+        {
+            throw new HttpRequestException("SBS API 의석표 데이터를 불러오지 못했습니다.");
+        }
+
+        return items
+            .GroupBy(item => FormatSidoCode(item.Sido?.Code ?? 0), StringComparer.OrdinalIgnoreCase)
+            .Select(group => group.First())
+            .Where(item => item.Sido is not null)
+            .ToArray();
+    }
+
+    private static IReadOnlyList<string> NormalizeSidoCodes(IEnumerable<string> sidoCodes)
+    {
+        return (sidoCodes ?? Array.Empty<string>())
+            .Select(code => code?.Trim() ?? string.Empty)
+            .Where(code => !string.IsNullOrWhiteSpace(code))
+            .Select(code => code.PadLeft(2, '0'))
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .OrderBy(code => code, StringComparer.Ordinal)
+            .ToArray();
+    }
+
+    private static IReadOnlyList<string> ResolveAllBasicApiSidoCodes()
+    {
+        return
+        [
+            "11",
+            "26",
+            "27",
+            "28",
+            "29",
+            "30",
+            "31",
+            "41",
+            "43",
+            "44",
+            "46",
+            "47",
+            "48",
+            "49",
+            "51",
+            "52",
+            "53"
+        ];
+    }
+
+    private static IReadOnlyList<string> ResolveCouncilSeatSidoCodes(int sungerType, IEnumerable<string> regionNames)
+    {
+        return (regionNames ?? Array.Empty<string>())
+            .Select(regionName => ResolveCouncilSeatSidoCode(sungerType, regionName))
+            .Where(code => !string.IsNullOrWhiteSpace(code))
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .OrderBy(code => code, StringComparer.Ordinal)
+            .ToArray();
+    }
+
+    private static string ResolveCouncilSeatSidoCode(int sungerType, string? regionName)
+    {
+        if (string.IsNullOrWhiteSpace(regionName))
+        {
+            return string.Empty;
+        }
+
+        var normalized = NormalizeRegionName(regionName);
+        return normalized switch
+        {
+            "세종" => "51",
+            "강원" => "52",
+            "전북" => "53",
+            "광주" when sungerType == 5 => "29",
+            "전남" when sungerType == 5 => "29",
+            "전남광주" when sungerType == 5 => "29",
+            "광주전남" when sungerType == 5 => "29",
+            _ => ResolveBasicApiSidoCode(regionName)
+        };
+    }
+
+    private static IEnumerable<SbsCouncilSeatPartyItem> ResolveCouncilSeatPartyItems(SbsCouncilSeatSidoItem item)
+    {
+        if (item.Parties is { Count: > 0 })
+        {
+            return item.Parties;
+        }
+
+        return item.Sigungus?
+            .SelectMany(sigungu => sigungu.Parties ?? [])
+            .ToArray() ?? [];
+    }
+
+    private static IEnumerable<SbsCouncilSeatPartyItem> ResolveCouncilSeatPartyItems(
+        SbsCouncilSeatSidoItem item,
+        ISet<string> sigunguCodes)
+    {
+        if (sigunguCodes.Count == 0)
+        {
+            return ResolveCouncilSeatPartyItems(item);
+        }
+
+        return item.Sigungus?
+            .Where(sigungu => sigungu.Sigungu is not null &&
+                              sigunguCodes.Contains(sigungu.Sigungu.Id.Trim()))
+            .SelectMany(sigungu => sigungu.Parties ?? [])
+            .ToArray() ?? [];
+    }
+
+    private static ISet<string> NormalizeCouncilSeatSigunguCodes(IEnumerable<string> sigunguCodes)
+    {
+        return (sigunguCodes ?? Array.Empty<string>())
+            .Select(code => code?.Trim() ?? string.Empty)
+            .Where(code => !string.IsNullOrWhiteSpace(code))
+            .ToHashSet(StringComparer.OrdinalIgnoreCase);
+    }
+
+    private static IEnumerable<string> GetCountingRegionMatchKeys(SbsTurnoutRegion? region)
+    {
+        if (region is null)
+        {
+            yield break;
+        }
+
+        foreach (var key in new[] { region.Id, region.Name4Id, region.Name3Id, region.Name2Id })
+        {
+            if (!string.IsNullOrWhiteSpace(key))
+            {
+                yield return key.Trim();
+            }
+        }
+    }
+
+    private static string FormatSidoCode(int code)
+        => code <= 0 ? string.Empty : code.ToString("00", CultureInfo.InvariantCulture);
+
     private static bool CanDeriveDistrictsFromCounting(SbsElectionConfiguration configuration)
         => Uri.Compare(
                configuration.BaseUri,
@@ -1711,6 +2065,20 @@ public sealed class SbsElectionApiClient : IDisposable
         string JudgementBadgeText = "",
         string JudgementDetailText = "");
 
+    public sealed record CouncilSeatPartySummary(
+        string PartyId,
+        string PartyName,
+        int RegionalSeats,
+        int ProportionalSeats,
+        int TotalSeats);
+
+    public sealed record CouncilPanseResult(
+        int Minju,
+        int Kukhim,
+        int Etc,
+        DateTimeOffset ReceivedAt,
+        string SourcePath);
+
     public sealed record TurnoutOverviewItem(
         string DisplayName,
         string RegionName,
@@ -1832,6 +2200,81 @@ public sealed class SbsElectionApiClient : IDisposable
         public int Tupyosu { get; set; }
     }
 
+    private sealed class SbsCouncilPanseItem
+    {
+        [JsonPropertyName("minju")]
+        public int Minju { get; set; }
+
+        [JsonPropertyName("kukhim")]
+        public int Kukhim { get; set; }
+
+        [JsonPropertyName("etc")]
+        public int Etc { get; set; }
+    }
+
+    private sealed class SbsCouncilSeatSidoItem
+    {
+        [JsonPropertyName("sido")]
+        public SbsCouncilSeatSido? Sido { get; set; }
+
+        [JsonPropertyName("sigungus")]
+        public List<SbsCouncilSeatSigunguItem>? Sigungus { get; set; }
+
+        [JsonPropertyName("parties")]
+        public List<SbsCouncilSeatPartyItem>? Parties { get; set; }
+    }
+
+    private sealed class SbsCouncilSeatSido
+    {
+        [JsonPropertyName("code")]
+        public int Code { get; set; }
+
+        [JsonPropertyName("name")]
+        public string Name { get; set; } = string.Empty;
+
+        [JsonPropertyName("order")]
+        public int Order { get; set; }
+    }
+
+    private sealed class SbsCouncilSeatSigunguItem
+    {
+        [JsonPropertyName("sigungu")]
+        public SbsCouncilSeatSigungu? Sigungu { get; set; }
+
+        [JsonPropertyName("parties")]
+        public List<SbsCouncilSeatPartyItem>? Parties { get; set; }
+    }
+
+    private sealed class SbsCouncilSeatSigungu
+    {
+        [JsonPropertyName("id")]
+        public string Id { get; set; } = string.Empty;
+
+        [JsonPropertyName("name")]
+        public string Name { get; set; } = string.Empty;
+
+        [JsonPropertyName("order")]
+        public int Order { get; set; }
+    }
+
+    private sealed class SbsCouncilSeatPartyItem
+    {
+        [JsonPropertyName("id")]
+        public string? Id { get; set; }
+
+        [JsonPropertyName("name")]
+        public string Name { get; set; } = string.Empty;
+
+        [JsonPropertyName("regional")]
+        public int Regional { get; set; }
+
+        [JsonPropertyName("proportional")]
+        public int Proportional { get; set; }
+
+        [JsonPropertyName("total")]
+        public int Total { get; set; }
+    }
+
     private sealed class SbsCountingItem
     {
         [JsonPropertyName("region")]

Tornado3_2026Election/ViewModels/DataViewModel.cs

@@ -1165,9 +1165,21 @@ public sealed class DataViewModel : ObservableObject, IDataRefreshGate, IDisposa
             }
         };
 
-        if (IsByElectionTemplate(template) ||
+        if (ScheduleTemplatePolicy.IsCouncilSeatTableFormat(template?.Name))
-            IsNormalPreElectionTurnoutDistrictBoardTemplate(template) ||
+        {
-            ScheduleTemplatePolicy.IsCouncilSeatTableFormat(template?.Name))
+            regionOptions.AddRange(CreateScheduleRegionGroupOptions(options, electionType));
+            regionOptions.AddRange(options.Select(option => new ScheduleRegionOption
+            {
+                Scope = ScheduleRegionScope.Single,
+                Label = option.DisplayName,
+                ElectionType = electionType,
+                RegionName = option.RegionName,
+                DistrictName = option.DistrictName,
+                DistrictCode = option.DistrictCode
+            }));
+        }
+        else if (IsByElectionTemplate(template) ||
+                 IsNormalPreElectionTurnoutDistrictBoardTemplate(template))
         {
             regionOptions.AddRange(CreateScheduleRegionGroupOptions(options, electionType));
         }
@@ -3684,6 +3696,25 @@ public sealed class DataViewModel : ObservableObject, IDataRefreshGate, IDisposa
         FormatTemplateDefinition? template,
         CancellationToken cancellationToken)
     {
+        if (ScheduleTemplatePolicy.IsCouncilSeatTableFormat(template?.Name) &&
+            IsBasicCouncilElectionType(electionType))
+        {
+            try
+            {
+                var councilSeatRegions = await _apiClient
+                    .GetCouncilSeatSigunguOptionsAsync(electionType, ResolveApiDistrictRegionScope(electionType), cancellationToken)
+                    .ConfigureAwait(false);
+                if (councilSeatRegions.Count > 0)
+                {
+                    return councilSeatRegions;
+                }
+            }
+            catch (Exception ex)
+            {
+                _logService.Warning($"{electionType} 의석표 지역 목록 수신 실패: {ex.Message}");
+            }
+        }
+
         if (UsesHistoricalScheduleOptions(template))
         {
             var historicalOptions = GetHistoricalScheduleDistrictOptions(electionType);
@@ -4166,31 +4197,73 @@ public sealed class DataViewModel : ObservableObject, IDataRefreshGate, IDisposa
             throw new InvalidOperationException("의석 집계 대상 선거구가 없습니다.");
         }
 
+        var sidoCodes = selectedTargets
+            .Select(ResolveCouncilSeatTargetSidoCode)
+            .Where(code => !string.IsNullOrWhiteSpace(code))
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+        if (sidoCodes.Length == 0)
+        {
+            throw new InvalidOperationException("의석 집계 대상 시도코드가 없습니다.");
+        }
+
+        var sigunguCodes = selectedTargets
+            .Select(ResolveCouncilSeatTargetSigunguCode)
+            .Where(code => !string.IsNullOrWhiteSpace(code))
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .ToArray();
+        var councilSeats = await _apiClient
+            .GetCouncilSeatSummariesAsync(electionType, sidoCodes, sigunguCodes, cancellationToken)
+            .ConfigureAwait(false);
+        if (councilSeats.Count == 0)
+        {
+            throw new InvalidOperationException("의석 집계용 SBS API 의석표 데이터가 없습니다.");
+        }
+
+        var seatCandidates = BuildCouncilSeatSummaryCandidates(councilSeats);
+        if (seatCandidates.Length == 0)
+        {
+            throw new InvalidOperationException("의석표에 반영할 정당별 의석 데이터가 없습니다.");
+        }
+
         var refreshResults = await GetCountingSnapshotsForScheduleTargetsAsync(
                 electionType,
                 selectedTargets,
                 cancellationToken)
             .ConfigureAwait(false);
-        if (refreshResults.Count == 0)
-        {
-            throw new InvalidOperationException("의석 집계용 개표 데이터가 없습니다.");
-        }
-
-        var seatCandidates = BuildCouncilSeatSummaryCandidates(electionType, refreshResults);
-        if (seatCandidates.Length == 0)
-        {
-            throw new InvalidOperationException("의석으로 집계할 현재 득표 기준 후보가 없습니다.");
-        }
-
         var totalVotes = refreshResults.Sum(result => Math.Max(0, result.TotalExpectedVotes));
         var turnoutVotes = refreshResults.Sum(result => Math.Max(0, result.TurnoutVotes));
         var countedVotes = refreshResults.Sum(result => Math.Max(0, result.CountedVotes ?? 0));
         var remainingVotes = refreshResults.Sum(result => Math.Max(0, result.RemainingVotes ?? 0));
-        var countedRate = ResolveCouncilSeatAggregateCountedRate(refreshResults);
+        var countedRate = refreshResults.Count == 0
+            ? 0d
+            : ResolveAggregateCountedRate(totalVotes, countedVotes, refreshResults);
+        var totalSeats = councilSeats.Sum(row => Math.Max(row.TotalSeats, row.RegionalSeats + row.ProportionalSeats));
         var regionName = ResolveCouncilSeatAggregateRegionLabel(station, selectedTargets);
-        var districtName = selectedTargets.Length == 1
+        var isSingleSigunguTarget = selectedTargets.Length == 1 && sigunguCodes.Length == 1;
+        var districtName = isSingleSigunguTarget
+            ? FirstNonWhiteSpace(selectedTargets[0].DistrictName, selectedTargets[0].DisplayName)
+            : selectedTargets.Length == 1
                 ? selectedTargets[0].DisplayName
                 : regionName;
+        var receivedAt = refreshResults.Select(result => result.ReceivedAt).DefaultIfEmpty(DateTimeOffset.Now).Max();
+        var countedVotesForSnapshot = refreshResults.Count == 0
+            ? totalSeats
+            : countedVotes;
+        var remainingVotesForSnapshot = refreshResults.Count == 0
+            ? 0
+            : remainingVotes;
+        var totalExpectedVotesForSnapshot = totalVotes > 0
+            ? totalVotes
+            : totalSeats;
+        var turnoutVotesForSnapshot = turnoutVotes > 0
+            ? turnoutVotes
+            : totalSeats;
+        var electionDistrictName = isSingleSigunguTarget
+            ? districtName
+            : selectedTargets.Length == 1
+                ? selectedTargets[0].DistrictName
+                : regionName;
         var history = ResolvePreElectionHistoryRecords(electionType, regionName, districtName);
 
         return new ElectionDataSnapshot
@@ -4200,14 +4273,14 @@ public sealed class DataViewModel : ObservableObject, IDataRefreshGate, IDisposa
             DistrictName = districtName,
             DistrictCode = selectedTargets.Length == 1 ? selectedTargets[0].DistrictCode : string.Empty,
             RegionName = regionName,
-            ElectionDistrictName = selectedTargets.Length == 1 ? selectedTargets[0].DistrictName : regionName,
+            ElectionDistrictName = electionDistrictName,
             Candidates = seatCandidates,
-            TotalExpectedVotes = totalVotes,
+            TotalExpectedVotes = totalExpectedVotesForSnapshot,
-            TurnoutVotes = turnoutVotes,
+            TurnoutVotes = turnoutVotesForSnapshot,
-            CountedVotesFromApi = countedVotes,
+            CountedVotesFromApi = countedVotesForSnapshot,
-            RemainingVotesFromApi = remainingVotes,
+            RemainingVotesFromApi = remainingVotesForSnapshot,
             CountedRateFromApi = countedRate,
-            ReceivedAt = refreshResults.Select(result => result.ReceivedAt).DefaultIfEmpty(DateTimeOffset.Now).Max(),
+            ReceivedAt = receivedAt,
             HistoricalTurnoutHistory = history.TurnoutHistory,
             HistoricalWinnerHistory = history.WinnerHistory
         };
@@ -4716,6 +4789,95 @@ public sealed class DataViewModel : ObservableObject, IDataRefreshGate, IDisposa
         return string.Concat((party ?? string.Empty).Where(character => !char.IsWhiteSpace(character)));
     }
 
+    private static CandidateEntry[] BuildCouncilSeatSummaryCandidates(
+        IReadOnlyList<SbsElectionApiClient.CouncilSeatPartySummary> councilSeats)
+    {
+        var candidates = new List<CandidateEntry>(councilSeats.Count * 2);
+        for (var index = 0; index < councilSeats.Count; index++)
+        {
+            var row = councilSeats[index];
+            if (row.RegionalSeats > 0)
+            {
+                candidates.Add(CreateCouncilSeatSummaryCandidate(
+                    $"{CouncilSeatDistrictCandidateCodePrefix}{index + 1:00}",
+                    row.PartyName,
+                    row.RegionalSeats,
+                    index + 1));
+            }
+
+            if (row.ProportionalSeats > 0)
+            {
+                candidates.Add(CreateCouncilSeatSummaryCandidate(
+                    $"{CouncilSeatProportionalCandidateCodePrefix}{index + 1:00}",
+                    row.PartyName,
+                    row.ProportionalSeats,
+                    index + 1));
+            }
+
+            if (row.RegionalSeats <= 0 && row.ProportionalSeats <= 0 && row.TotalSeats > 0)
+            {
+                candidates.Add(CreateCouncilSeatSummaryCandidate(
+                    $"{CouncilSeatCandidateCodePrefix}{index + 1:00}",
+                    row.PartyName,
+                    row.TotalSeats,
+                    index + 1));
+            }
+        }
+
+        return candidates.ToArray();
+    }
+
+    private static CandidateEntry[] BuildProportionalCouncilCandidates(
+        IReadOnlyList<SbsElectionApiClient.CouncilSeatPartySummary> councilSeats)
+    {
+        var totalProportionalSeats = councilSeats.Sum(row => Math.Max(0, row.ProportionalSeats));
+        return councilSeats
+            .OrderByDescending(row => row.ProportionalSeats)
+            .ThenBy(row => row.PartyName, StringComparer.Ordinal)
+            .Select((row, index) =>
+            {
+                var seatCount = Math.Max(0, row.ProportionalSeats);
+                return new CandidateEntry
+                {
+                    CandidateCode = $"{CouncilSeatProportionalCandidateCodePrefix}{index + 1:00}",
+                    BallotNumber = (index + 1).ToString(),
+                    Name = row.PartyName,
+                    Party = row.PartyName,
+                    ColorParty = row.PartyName,
+                    VoteCount = seatCount,
+                    VoteRate = totalProportionalSeats <= 0
+                        ? 0
+                        : Math.Round(seatCount * 100d / totalProportionalSeats, 1, MidpointRounding.AwayFromZero),
+                    HasImage = false,
+                    ManualJudgement = CandidateJudgement.None,
+                    AutomaticJudgement = seatCount > 0 ? CandidateJudgement.Elected : CandidateJudgement.None
+                };
+            })
+            .ToArray();
+    }
+
+    private static CandidateEntry CreateCouncilSeatSummaryCandidate(
+        string candidateCode,
+        string partyName,
+        int seatCount,
+        int ballotNumber)
+    {
+        var normalizedParty = string.IsNullOrWhiteSpace(partyName) ? "무기타" : partyName.Trim();
+        return new CandidateEntry
+        {
+            CandidateCode = candidateCode,
+            BallotNumber = ballotNumber.ToString(),
+            Name = normalizedParty,
+            Party = normalizedParty,
+            ColorParty = normalizedParty,
+            VoteCount = seatCount,
+            VoteRate = seatCount,
+            HasImage = false,
+            ManualJudgement = CandidateJudgement.None,
+            AutomaticJudgement = CandidateJudgement.Elected
+        };
+    }
+
     private static CandidateEntry[] BuildCouncilSeatSummaryCandidates(
         string electionType,
         IReadOnlyList<SbsElectionApiClient.SbsElectionRefreshResult> refreshResults)
@@ -5084,6 +5246,49 @@ public sealed class DataViewModel : ObservableObject, IDataRefreshGate, IDisposa
         return SbsElectionApiClient.ResolveBasicApiSidoCode(target.RegionName);
     }
 
+    private string ResolveCouncilSeatTargetSidoCode(ScheduleRegionTarget target)
+    {
+        if (!string.IsNullOrWhiteSpace(target.DistrictCode) &&
+            target.DistrictCode.Length == 2 &&
+            target.DistrictCode.All(char.IsDigit))
+        {
+            return target.DistrictCode;
+        }
+
+        return ResolveScheduleTargetParentRegionCode(target);
+    }
+
+    private static string ResolveCouncilSeatTargetSigunguCode(ScheduleRegionTarget target)
+    {
+        if (string.IsNullOrWhiteSpace(target.DistrictCode) ||
+            target.DistrictCode.Length == 2 && target.DistrictCode.All(char.IsDigit))
+        {
+            return string.Empty;
+        }
+
+        return target.DistrictCode.Trim();
+    }
+
+    private string ResolveSelectedCouncilSeatSidoCode()
+    {
+        if (!string.IsNullOrWhiteSpace(DistrictCode) &&
+            DistrictCode.Length == 2 &&
+            DistrictCode.All(char.IsDigit))
+        {
+            return DistrictCode;
+        }
+
+        if (!string.IsNullOrWhiteSpace(DistrictName) &&
+            _districtOptionMap.TryGetValue(DistrictName, out var option))
+        {
+            return !string.IsNullOrWhiteSpace(option.ParentRegionCode)
+                ? option.ParentRegionCode
+                : option.DistrictCode;
+        }
+
+        return SbsElectionApiClient.ResolveBasicApiSidoCode(FirstNonWhiteSpace(RegionName, DistrictName));
+    }
+
     private static bool IsBottomTurnoutBoardTemplate(FormatTemplateDefinition template)
     {
         return template.RecommendedChannel == BroadcastChannel.Bottom &&