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Decode error responses for OpenRouter #166

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Decode error responses for OpenRouter #166

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23 changes: 22 additions & 1 deletion Sources/OpenAI/Public/ResponseModels/OpenAIErrorResponse.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -24,5 +24,26 @@ public struct OpenAIErrorResponse: Decodable {
public let type: String?
public let param: String?
public let code: String?

enum CodingKeys: String, CodingKey {
case message, type, param, code
}

public init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
message = try container.decodeIfPresent(String.self, forKey: .message)
type = try container.decodeIfPresent(String.self, forKey: .type)
param = try container.decodeIfPresent(String.self, forKey: .param)

// Some OpenAI-compatible providers (e.g. OpenRouter) provide literal response status codes in the "code" field (e.g., 403)
// Try decoding "code" first as an Int, then fallback to a String
if let intCode = try? container.decodeIfPresent(Int.self, forKey: .code) {
code = String(intCode)
} else if let stringCode = try? container.decodeIfPresent(String.self, forKey: .code) {
code = stringCode
} else {
code = nil
}
}
}
}
}