agrynco
aba4173827
Share template keys across email and push with independent editors and revisions. Render localized actions and preserve version-one delivery. Ref: IT-1627
50 lines
2.1 KiB
C#
50 lines
2.1 KiB
C#
using System.Text.Json;
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namespace HrynCo.NotificationService.DAL.Abstract.Templates;
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public static class PushTemplateActionValidation
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{
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private static readonly JsonSerializerOptions JsonOptions = new(JsonSerializerDefaults.Web)
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{
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PropertyNameCaseInsensitive = false
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};
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public static PushTemplateActions Parse(string json)
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{
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if (string.IsNullOrWhiteSpace(json))
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throw new EmailTemplateWriteException("Actions JSON is required. Use {} for no actions.", false);
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try
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{
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var actions = JsonSerializer.Deserialize<PushTemplateActions>(json, JsonOptions)
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?? throw new JsonException();
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Validate(actions);
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return actions;
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}
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catch (JsonException)
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{
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throw new EmailTemplateWriteException("Invalid actions JSON. Use defaultAction and buttons with action and label.", false);
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}
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}
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public static void Validate(PushTemplateActions actions)
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{
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if (actions.DefaultAction is not null) ValidateKey(actions.DefaultAction);
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if (actions.Buttons is null || actions.Buttons.Count > 3)
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throw new EmailTemplateWriteException("Configure up to three push buttons.", false);
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var keys = new HashSet<string>(StringComparer.Ordinal);
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foreach (var button in actions.Buttons)
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{
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if (button is null) throw new EmailTemplateWriteException("A button needs an action and label.", false);
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ValidateKey(button.Action);
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if (!keys.Add(button.Action) || string.IsNullOrWhiteSpace(button.Label) || button.Label.Length > 100)
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throw new EmailTemplateWriteException("Button actions must be unique and labels must contain 1–100 characters.", false);
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}
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}
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private static void ValidateKey(string key)
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{
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if (string.IsNullOrWhiteSpace(key) || key.Length > 100 || key.Any(c => !char.IsAsciiLetterOrDigit(c) && c is not '_' and not '-' and not '.'))
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throw new EmailTemplateWriteException("Action keys need 1–100 letters, digits, dots, underscores or hyphens.", false);
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}
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}
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