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fix(gemini): support image conversion when content coerced to content… #9279

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fix(gemini): support image conversion when content coerced to content… #9279

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20 changes: 20 additions & 0 deletions libs/providers/langchain-google-common/src/utils/gemini.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -367,6 +367,15 @@ export function getGeminiAPI(config?: GeminiAPIConfig): GoogleAIAPI {
}
}

function messageContentMultimodalImageData(
content: ContentBlock.Multimodal.Image
) {
if (!content.url) {
throw new Error("Missing Image URL");
}
return inlineOrFileDataFromUrl(content.url);
}

function messageContentImageUrlData(
content: MessageContentImageUrl
): GeminiPartInlineData | GeminiPartFileData {
Expand All @@ -378,6 +387,10 @@ export function getGeminiAPI(config?: GeminiAPIConfig): GoogleAIAPI {
throw new Error("Missing Image URL");
}

return inlineOrFileDataFromUrl(url);
}

function inlineOrFileDataFromUrl(url: string) {
const mimeTypeAndData = extractMimeType(url);
if (mimeTypeAndData) {
return {
Expand Down Expand Up @@ -620,6 +633,13 @@ export function getGeminiAPI(config?: GeminiAPIConfig): GoogleAIAPI {
return messageContentImageUrl(content as MessageContentImageUrl);
}
break;
case "image":
if ("url" in content) {
return messageContentMultimodalImageData(
content as ContentBlock.Multimodal.Image
);
}
break;
case "media":
return await messageContentMedia(content);
case "reasoning":
Expand Down