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This commit is contained in:
JiriUhlir
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using System.Text.Json.Nodes;
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using Csob.Client;
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namespace Csob.Services;
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/// <summary>AISP – account information (accounts, balance, transactions, standing orders, direct debits).</summary>
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public sealed class AccountsService
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{
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private readonly CsobApiAccessor _accessor;
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public AccountsService(CsobApiAccessor accessor) => _accessor = accessor;
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public Task<JsonNode?> ListAsync(int? page, int? size, string? sort, string? order, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.Accounts, Paging(page, size, sort, order), ct);
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public Task<JsonNode?> BalanceAsync(string accountId, string? currency, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.Balance(accountId),
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new Dictionary<string, string?> { ["currency"] = currency }, ct);
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public Task<JsonNode?> TransactionsAsync(string accountId, TransactionQuery query, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.Transactions(accountId), query.ToDictionary(), ct);
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public Task<JsonNode?> AwaitingTransactionsAsync(string accountId, int? page, int? size, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.AwaitingTransactions(accountId), Paging(page, size, null, null), ct);
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public Task<JsonNode?> StandingOrdersAsync(string accountId, int? page, int? size, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.AccountStandingOrders(accountId), Paging(page, size, null, null), ct);
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public Task<JsonNode?> StandingOrderDetailAsync(string accountId, string standingOrderId, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.AccountStandingOrder(accountId, standingOrderId), null, ct);
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public Task<JsonNode?> DirectDebitsAsync(string accountId, int? page, int? size, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.AccountDirectDebits(accountId), Paging(page, size, null, null), ct);
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private static Dictionary<string, string?> Paging(int? page, int? size, string? sort, string? order) => new()
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{
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["page"] = page?.ToString(),
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["size"] = size?.ToString(),
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["sort"] = sort,
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["order"] = order,
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};
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}
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/// <summary>Optional filters for the transactions listing (forwarded as query parameters).</summary>
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public sealed class TransactionQuery
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{
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public int? Page { get; set; }
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public int? Size { get; set; }
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public string? Sort { get; set; }
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public string? Order { get; set; }
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/// <summary>ISO date (YYYY-MM-DD) lower bound.</summary>
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public string? DateFrom { get; set; }
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/// <summary>ISO date (YYYY-MM-DD) upper bound.</summary>
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public string? DateTo { get; set; }
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public Dictionary<string, string?> ToDictionary() => new()
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{
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["page"] = Page?.ToString(),
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["size"] = Size?.ToString(),
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["sort"] = Sort,
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["order"] = Order,
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["dateFrom"] = DateFrom,
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["dateTo"] = DateTo,
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};
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}
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using System.Text.Json.Nodes;
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using Csob.Client;
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namespace Csob.Services;
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/// <summary>
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/// Common – PSU consent lifecycle (create / detail / revoke). The consent request body varies
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/// across COBS profiles, so it is accepted and forwarded as raw JSON.
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/// </summary>
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public sealed class ConsentsService
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{
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private readonly CsobApiAccessor _accessor;
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public ConsentsService(CsobApiAccessor accessor) => _accessor = accessor;
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public Task<JsonNode?> CreateAsync(JsonNode request, CancellationToken ct)
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=> _accessor.Client.PostAsync(CsobApiPaths.Consents, request, ct);
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public Task<JsonNode?> DetailAsync(string id, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.Consent(id), null, ct);
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public Task<JsonNode?> DeleteAsync(string id, CancellationToken ct)
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=> _accessor.Client.DeleteAsync(CsobApiPaths.Consent(id), ct);
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}
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using System.Text.Json.Nodes;
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using Csob.Client;
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namespace Csob.Services;
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/// <summary>
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/// PISP – direct-debit mandate initiation, detail/status, revocation and the sign (SCA) flow.
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/// The mandate creation body varies across COBS profiles, so it is accepted and forwarded as raw JSON.
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/// </summary>
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public sealed class DirectDebitsService
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{
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private readonly CsobApiAccessor _accessor;
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public DirectDebitsService(CsobApiAccessor accessor) => _accessor = accessor;
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public Task<JsonNode?> InitiateAsync(JsonNode request, CancellationToken ct)
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=> _accessor.Client.PostAsync(CsobApiPaths.DirectDebits, request, ct);
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public Task<JsonNode?> DetailAsync(string id, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.DirectDebit(id), null, ct);
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public Task<JsonNode?> StatusAsync(string id, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.DirectDebitStatus(id), null, ct);
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public Task<JsonNode?> CancelAsync(string id, CancellationToken ct)
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=> _accessor.Client.DeleteAsync(CsobApiPaths.DirectDebit(id), ct);
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public Task<JsonNode?> StartSignAsync(string id, string signId, JsonNode? body, CancellationToken ct)
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=> _accessor.Client.PostAsync(CsobApiPaths.DirectDebitSign(id, signId), body, ct);
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public Task<JsonNode?> SignStatusAsync(string id, string signId, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.DirectDebitSign(id, signId), null, ct);
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public Task<JsonNode?> FinalizeSignAsync(string id, string signId, JsonNode? body, CancellationToken ct)
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=> _accessor.Client.PutAsync(CsobApiPaths.DirectDebitSign(id, signId), body, ct);
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}
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using System.Net;
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using System.Text.Json.Nodes;
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using Csob.Client;
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using Csob.Configuration;
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using Csob.Credentials;
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using Csob.Models;
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namespace Csob.Services;
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/// <summary>
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/// OAuth2 Authorization Code helper for the ČSOB PSD2 flow. Builds the PSU authorization URL and
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/// exchanges/refreshes tokens against the ČSOB token endpoint. The token endpoint is behind mutual
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/// TLS, so the client certificate header is required for the token/refresh calls. Client id/secret
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/// are taken from per-request headers (this service is multi-tenant and stores no app credentials).
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/// </summary>
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public sealed class OAuthService
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{
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private readonly RequestCredentialsProvider _credentials;
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private readonly CsobHttpClientProvider _httpClientProvider;
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private readonly CsobSettings _settings;
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public OAuthService(
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RequestCredentialsProvider credentials,
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CsobHttpClientProvider httpClientProvider,
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CsobSettings settings)
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{
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_credentials = credentials;
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_httpClientProvider = httpClientProvider;
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_settings = settings;
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}
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/// <summary>Builds the authorization URL to which the PSU must be redirected.</summary>
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public AuthorizationUrlResponse BuildAuthorizationUrl(string redirectUri, string? scope, string? state)
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{
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var clientId = RequireHeader(CredentialConstants.ClientIdHeader);
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var query = new Dictionary<string, string?>
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{
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["response_type"] = "code",
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["client_id"] = clientId,
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["redirect_uri"] = redirectUri,
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["scope"] = scope,
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["state"] = state,
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};
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var url = _settings.OAuthAuthorizeUrl + "?" + string.Join("&", query
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.Where(kvp => !string.IsNullOrWhiteSpace(kvp.Value))
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.Select(kvp => $"{Uri.EscapeDataString(kvp.Key)}={Uri.EscapeDataString(kvp.Value!)}"));
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return new AuthorizationUrlResponse { AuthorizationUrl = url, State = state };
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}
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public Task<JsonNode?> ExchangeCodeAsync(TokenExchangeRequest request, CancellationToken ct)
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=> PostTokenAsync(new Dictionary<string, string>
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{
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["grant_type"] = "authorization_code",
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["code"] = request.Code,
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["redirect_uri"] = request.RedirectUri,
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}, ct);
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public Task<JsonNode?> RefreshAsync(TokenRefreshRequest request, CancellationToken ct)
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=> PostTokenAsync(new Dictionary<string, string>
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{
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["grant_type"] = "refresh_token",
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["refresh_token"] = request.RefreshToken,
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}, ct);
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private async Task<JsonNode?> PostTokenAsync(Dictionary<string, string> form, CancellationToken ct)
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{
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var clientId = RequireHeader(CredentialConstants.ClientIdHeader);
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var clientSecret = RequireHeader(CredentialConstants.ClientSecretHeader);
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var certificate = _credentials.TryBuildCertificate()
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?? throw new MissingCredentialsException(new[] { CredentialConstants.CertificateHeader });
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form["client_id"] = clientId;
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form["client_secret"] = clientSecret;
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var http = _httpClientProvider.GetClient(certificate);
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using var content = new FormUrlEncodedContent(form);
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using var response = await http.PostAsync(_settings.OAuthTokenUrl, content, ct);
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var payload = await response.Content.ReadAsStringAsync(ct);
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if (!response.IsSuccessStatusCode)
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{
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throw new CsobApiException(response.StatusCode, ParseOAuthError(payload), payload);
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}
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return string.IsNullOrWhiteSpace(payload) ? null : JsonNode.Parse(payload);
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}
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private string RequireHeader(string name)
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=> _credentials.Header(name) ?? throw new MissingCredentialsException(new[] { name });
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private static IReadOnlyList<string> ParseOAuthError(string payload)
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{
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if (string.IsNullOrWhiteSpace(payload))
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{
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return Array.Empty<string>();
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}
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try
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{
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// OAuth2 errors use { "error": "...", "error_description": "..." }.
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var error = JsonNode.Parse(payload)?["error"]?.GetValue<string>();
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return string.IsNullOrWhiteSpace(error) ? Array.Empty<string>() : new[] { error! };
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}
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catch (System.Text.Json.JsonException)
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{
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return Array.Empty<string>();
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}
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}
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}
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@@ -0,0 +1,37 @@
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using System.Text.Json.Nodes;
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using Csob.Client;
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using Csob.Models;
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namespace Csob.Services;
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/// <summary>PISP – single payment initiation, status/detail, cancellation and the sign (SCA) flow.</summary>
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public sealed class PaymentsService
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{
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private readonly CsobApiAccessor _accessor;
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public PaymentsService(CsobApiAccessor accessor) => _accessor = accessor;
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public Task<JsonNode?> InitiateAsync(PaymentInitiationRequest request, CancellationToken ct)
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=> _accessor.Client.PostAsync(CsobApiPaths.Payments, request, ct);
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public Task<JsonNode?> DetailAsync(string id, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.Payment(id), null, ct);
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public Task<JsonNode?> StatusAsync(string id, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.PaymentStatus(id), null, ct);
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public Task<JsonNode?> CancelAsync(string id, CancellationToken ct)
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=> _accessor.Client.DeleteAsync(CsobApiPaths.Payment(id), ct);
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/// <summary>Starts transaction authorization (SCA). Returns the redirect details for the PSU.</summary>
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public Task<JsonNode?> StartSignAsync(string id, string signId, JsonNode? body, CancellationToken ct)
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=> _accessor.Client.PostAsync(CsobApiPaths.PaymentSign(id, signId), body, ct);
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/// <summary>Gets the current state of an authorization (sign) transaction.</summary>
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public Task<JsonNode?> SignStatusAsync(string id, string signId, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.PaymentSign(id, signId), null, ct);
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/// <summary>Finalizes an authorization (sign) transaction.</summary>
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public Task<JsonNode?> FinalizeSignAsync(string id, string signId, JsonNode? body, CancellationToken ct)
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=> _accessor.Client.PutAsync(CsobApiPaths.PaymentSign(id, signId), body, ct);
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}
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@@ -0,0 +1,34 @@
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using System.Text.Json.Nodes;
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using Csob.Client;
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using Csob.Models;
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namespace Csob.Services;
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/// <summary>PISP – standing-order initiation, detail/status, cancellation and the sign (SCA) flow.</summary>
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public sealed class StandingOrdersService
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{
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private readonly CsobApiAccessor _accessor;
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public StandingOrdersService(CsobApiAccessor accessor) => _accessor = accessor;
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public Task<JsonNode?> InitiateAsync(StandingOrderInitiationRequest request, CancellationToken ct)
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=> _accessor.Client.PostAsync(CsobApiPaths.StandingOrders, request, ct);
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public Task<JsonNode?> DetailAsync(string id, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.StandingOrder(id), null, ct);
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public Task<JsonNode?> StatusAsync(string id, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.StandingOrderStatus(id), null, ct);
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public Task<JsonNode?> CancelAsync(string id, CancellationToken ct)
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=> _accessor.Client.DeleteAsync(CsobApiPaths.StandingOrder(id), ct);
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public Task<JsonNode?> StartSignAsync(string id, string signId, JsonNode? body, CancellationToken ct)
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=> _accessor.Client.PostAsync(CsobApiPaths.StandingOrderSign(id, signId), body, ct);
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public Task<JsonNode?> SignStatusAsync(string id, string signId, CancellationToken ct)
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=> _accessor.Client.GetAsync(CsobApiPaths.StandingOrderSign(id, signId), null, ct);
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public Task<JsonNode?> FinalizeSignAsync(string id, string signId, JsonNode? body, CancellationToken ct)
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=> _accessor.Client.PutAsync(CsobApiPaths.StandingOrderSign(id, signId), body, ct);
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}
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