// Deepinfra provider module implements model/runtime integration.
import {
  createOpenAiCompatibleImageGenerationProvider,
  imageSourceUploadFileName,
  type ImageGenerationProvider,
} from "openclaw/plugin-sdk/image-generation";
import { normalizeOptionalString } from "openclaw/plugin-sdk/string-coerce-runtime";
import {
  DEEPINFRA_BASE_URL,
  DEEPINFRA_IMAGE_FALLBACK_MODELS,
  DEFAULT_DEEPINFRA_IMAGE_SIZE,
  normalizeDeepInfraBaseUrl,
  normalizeDeepInfraModelRef,
} from "./media-models.js";
import type { DeepInfraSurfaceModel } from "./provider-models.js";

const DEEPINFRA_IMAGE_SIZES = ["512x512", "1024x1024", "1024x1792", "1792x1024"] as const;
const MAX_DEEPINFRA_INPUT_IMAGES = 1;

// First entry of imageGenModels is the default; rest fill the allowlist.
// No catalog supplied -> DEEPINFRA_IMAGE_FALLBACK_MODELS.
export function buildDeepInfraImageGenerationProvider(options?: {
  imageGenModels?: readonly DeepInfraSurfaceModel[];
}): ImageGenerationProvider {
  const ids =
    options?.imageGenModels && options.imageGenModels.length > 0
      ? options.imageGenModels.map((model) => model.id)
      : [...DEEPINFRA_IMAGE_FALLBACK_MODELS];
  const defaultModel = ids[0] ?? DEEPINFRA_IMAGE_FALLBACK_MODELS[0];
  return createOpenAiCompatibleImageGenerationProvider({
    id: "deepinfra",
    label: "DeepInfra",
    defaultModel,
    models: ids,
    capabilities: {
      generate: {
        maxCount: 4,
        supportsSize: true,
        supportsAspectRatio: false,
        supportsResolution: false,
      },
      edit: {
        enabled: true,
        maxCount: 1,
        maxInputImages: MAX_DEEPINFRA_INPUT_IMAGES,
        supportsSize: true,
        supportsAspectRatio: false,
        supportsResolution: false,
      },
      geometry: {
        sizes: [...DEEPINFRA_IMAGE_SIZES],
      },
    },
    defaultBaseUrl: DEEPINFRA_BASE_URL,
    normalizeModel: normalizeDeepInfraModelRef,
    resolveBaseUrl: ({ providerConfig }) =>
      normalizeDeepInfraBaseUrl(providerConfig?.baseUrl, DEEPINFRA_BASE_URL),
    resolveAllowPrivateNetwork: () => false,
    useConfiguredRequest: true,
    resolveCount: ({ req, mode }) => (mode === "edit" ? 1 : (req.count ?? 1)),
    buildGenerateRequest: ({ req, model, count }) => ({
      kind: "json",
      body: {
        model,
        prompt: req.prompt,
        n: count,
        size: normalizeOptionalString(req.size) ?? DEFAULT_DEEPINFRA_IMAGE_SIZE,
        response_format: "b64_json",
      },
    }),
    buildEditRequest: ({ req, inputImages, model, count }) => {
      const image = inputImages[0];
      if (!image) {
        throw new Error("DeepInfra image edit missing reference image.");
      }
      const form = new FormData();
      form.set("model", model);
      form.set("prompt", req.prompt);
      form.set("n", String(count));
      form.set("size", normalizeOptionalString(req.size) ?? DEFAULT_DEEPINFRA_IMAGE_SIZE);
      form.set("response_format", "b64_json");
      const mimeType = normalizeOptionalString(image.mimeType) ?? "image/png";
      form.append(
        "image",
        new Blob([new Uint8Array(image.buffer)], { type: mimeType }),
        imageSourceUploadFileName({ image, index: 0 }),
      );
      return { kind: "multipart", form };
    },
    response: { defaultMimeType: "image/jpeg", sniffMimeType: true },
    tooManyInputImagesError: "DeepInfra image editing supports one reference image.",
    missingApiKeyError: "DeepInfra API key missing",
    emptyResponseError: "DeepInfra image response did not include generated image data",
    failureLabels: {
      generate: "DeepInfra image generation failed",
      edit: "DeepInfra image edit failed",
    },
  });
}