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Improve JsonSchema.ToJsonSchema #154

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merged 2 commits into from
Jan 3, 2025
Merged

Improve JsonSchema.ToJsonSchema #154

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5aacc4e
Update JsonSchema.ToJsonSchema
mili-tan Dec 30, 2024
ebf8352
Update JsonSchema.ToJsonSchema
mili-tan Dec 30, 2024
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96 changes: 68 additions & 28 deletions src/Models/JsonSchema.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -33,40 +33,64 @@ public class JsonSchema
/// <summary>
/// Get the JsonSchema from Type, use typeof(Class) to get the Type of Class.
/// </summary>

public static JsonSchema ToJsonSchema(Type type)
{
var required = new List<string>();
var properties = new Dictionary<string, Property>();
foreach (var property in type.GetProperties())
{
var propertyName = property.Name;
var propertyType = property.PropertyType;

var isEnumerable = type.IsArray || (typeof(IEnumerable).IsAssignableFrom(propertyType) && propertyType != typeof(string));
var isNullable = type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>);

properties.Add(propertyName,
new Property
{
Type = GetTypeName(propertyType),
Items = isEnumerable
? new Item
{
Type = GetTypeName(propertyType.IsArray
? propertyType.GetElementType()
: propertyType.GetGenericArguments().First())
}
: null
});

if (!isNullable)
required.Add(propertyName);
}
var properties = type.GetProperties().ToDictionary(
prop => prop.Name,
prop => new Property
{
Type = GetTypeName(prop.PropertyType),
Items = typeof(IEnumerable).IsAssignableFrom(prop.PropertyType) && prop.PropertyType != typeof(string)
? new Item
{
Type = IsPrimitiveType(prop.PropertyType.IsArray
? prop.PropertyType.GetElementType()
: prop.PropertyType.GetGenericArguments().First())
? GetTypeName(prop.PropertyType.IsArray
? prop.PropertyType.GetElementType()
: prop.PropertyType.GetGenericArguments().First())
: "object",
Properties = IsPrimitiveType(prop.PropertyType.IsArray
? prop.PropertyType.GetElementType()
: prop.PropertyType.GetGenericArguments().First())
? null
: ToJsonSchema(prop.PropertyType.IsArray
? prop.PropertyType.GetElementType()
: prop.PropertyType.GetGenericArguments().First()).Properties,
Required = IsPrimitiveType(prop.PropertyType.IsArray
? prop.PropertyType.GetElementType()
: prop.PropertyType.GetGenericArguments().First())
? null
: (prop.PropertyType.IsArray
? prop.PropertyType.GetElementType()
: prop.PropertyType.GetGenericArguments().First()).GetProperties()
.Where(info =>
!info.PropertyType.IsGenericType ||
info.PropertyType.GetGenericTypeDefinition() != typeof(Nullable<>) ||
Nullable.GetUnderlyingType(info.PropertyType) != null)
.Select(info => info.Name)
.ToList()
}
: null
}
);

var required = type.GetProperties()
.Where(prop =>
!prop.PropertyType.IsGenericType ||
prop.PropertyType.GetGenericTypeDefinition() != typeof(Nullable<>) ||
Nullable.GetUnderlyingType(prop.PropertyType) != null)
.Select(prop => prop.Name)
.ToList();

return new JsonSchema { Properties = properties, Required = required };
}

private static bool IsPrimitiveType(Type type)
{
return type.IsPrimitive || type == typeof(string) || type == typeof(decimal);
}

private static string GetTypeName(Type type)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>))
Expand Down Expand Up @@ -94,6 +118,7 @@ private static string GetTypeName(Type type)
return "number";
case TypeCode.Boolean:
return "boolean";
case TypeCode.DateTime:
case TypeCode.String:
return "string";
case TypeCode.Object:
Expand Down Expand Up @@ -141,6 +166,21 @@ public class Item
/// <summary>
/// Gets or sets the type of the item.
/// </summary>
[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
[JsonPropertyName("type")]
public string? Type { get; set; }

/// <summary>
/// Gets or sets the properties of the item.
/// </summary>
[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
[JsonPropertyName("properties")]
public Dictionary<string, Property>? Properties { get; set; }

/// <summary>
/// Gets or sets a list of required fields within the item.
/// </summary>
[JsonPropertyName("required")]
[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
public IEnumerable<string>? Required { get; set; }
}
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