export interface BananaImageModelPreset {
  modelId: string;
  displayName: string;
  description: string;
  supportsVision: boolean;
  supportsImageGen: boolean;
  capabilities?: Record<string, any>;
  defaultParams?: Record<string, any>;
  imageGenConfig?: Record<string, any>;
  sortOrder: number;
}

export const BANANAIMAGE_BASE_URL = "https://bananaimage.aigenmedia.art";

const BANANAIMAGE_STANDARD_RATIOS = [
  "auto",
  "1:1",
  "2:3",
  "3:2",
  "3:4",
  "4:3",
  "4:5",
  "5:4",
  "9:16",
  "16:9",
  "21:9",
];

const BANANAIMAGE_EXTENDED_RATIOS = [
  "auto",
  "1:1",
  "1:4",
  "1:8",
  "2:3",
  "3:2",
  "3:4",
  "4:1",
  "4:3",
  "4:5",
  "5:4",
  "8:1",
  "9:16",
  "16:9",
  "21:9",
];

const BANANAIMAGE_GPT_IMAGE_2_RATIOS = [
  "auto",
  "1:1",
  "4:5",
  "5:4",
  "3:4",
  "4:3",
  "2:3",
  "3:2",
  "9:16",
  "16:9",
  "1:2",
  "2:1",
  "9:21",
  "21:9",
];

const BANANAIMAGE_IMAGE_SIZES = ["1K", "2K", "4K"];

const BANANAIMAGE_IMAGE_CONFIG = {
  maxImages: 1,
  supportsSize: true,
  supports1K: true,
  supports2K: true,
  supports4K: true,
  supportsPromptExtend: false,
  supportsNegativePrompt: false,
  supportsWatermark: false,
  supportsSeed: false,
  maxReferenceImages: 14,
  supportedImageSizes: BANANAIMAGE_IMAGE_SIZES,
  enableLoadingPlaceholder: true,
  loadingColor: "yellow",
};

function buildBananaImagePreset(params: {
  modelId: string;
  displayName: string;
  description: string;
  apiFormat: "bananaimage-gemini" | "bananaimage-gpt-image-2";
  supportedAspectRatios: string[];
  sortOrder: number;
}) {
  return {
    modelId: params.modelId,
    displayName: params.displayName,
    description: params.description,
    supportsVision: true,
    supportsImageGen: true,
    capabilities: {
      provider: "bananaimage",
      apiFormat: params.apiFormat,
      supportedModes: ["text-to-image", "image-to-image", "reference-images"],
      supportedAspectRatios: params.supportedAspectRatios,
      supportedImageSizes: BANANAIMAGE_IMAGE_SIZES,
      supportsMultiImageReference: true,
      maxReferenceImages: 14,
      fourKAllowedRatios:
        params.apiFormat === "bananaimage-gpt-image-2"
          ? BANANAIMAGE_GPT_IMAGE_2_RATIOS.filter((ratio) => ratio !== "auto")
          : undefined,
    },
    defaultParams: {
      provider: "bananaimage",
      apiFormat: params.apiFormat,
      endpoint: params.modelId,
      imageSize: "2K",
      aspectRatio: "auto",
      supportedModes: ["text-to-image", "image-to-image", "reference-images"],
    },
    imageGenConfig: {
      ...BANANAIMAGE_IMAGE_CONFIG,
      apiFormat: params.apiFormat,
      supportedAspectRatios: params.supportedAspectRatios,
    },
    sortOrder: params.sortOrder,
  } satisfies BananaImageModelPreset;
}

export const BANANAIMAGE_MODEL_PRESETS: BananaImageModelPreset[] = [
  buildBananaImagePreset({
    modelId: "gemini-3-pro-image-preview",
    displayName: "BananaImage Nano Banana Pro",
    description: "BananaImage Nano Banana Pro。支持文生图、图片编辑、多图参考、比例选择和 1K/2K/4K 输出。",
    apiFormat: "bananaimage-gemini",
    supportedAspectRatios: BANANAIMAGE_STANDARD_RATIOS,
    sortOrder: 10,
  }),
  buildBananaImagePreset({
    modelId: "gemini-3.1-flash-image-preview",
    displayName: "BananaImage Nano Banana 2",
    description: "BananaImage Nano Banana 2。支持文生图、图片编辑、多图参考、极端比例和 1K/2K/4K 输出。",
    apiFormat: "bananaimage-gemini",
    supportedAspectRatios: BANANAIMAGE_EXTENDED_RATIOS,
    sortOrder: 20,
  }),
  buildBananaImagePreset({
    modelId: "gemini-3-pro-image-preview-plus",
    displayName: "BananaImage Nano Banana Pro+",
    description: "BananaImage Nano Banana Pro+ 放宽限制版。支持文生图、图片编辑、多图参考、比例选择和 1K/2K/4K 输出。",
    apiFormat: "bananaimage-gemini",
    supportedAspectRatios: BANANAIMAGE_STANDARD_RATIOS,
    sortOrder: 30,
  }),
  buildBananaImagePreset({
    modelId: "gemini-3.1-flash-image-preview-plus",
    displayName: "BananaImage Nano Banana 2+",
    description: "BananaImage Nano Banana 2+ 放宽限制版。支持文生图、图片编辑、多图参考、极端比例和 1K/2K/4K 输出。",
    apiFormat: "bananaimage-gemini",
    supportedAspectRatios: BANANAIMAGE_EXTENDED_RATIOS,
    sortOrder: 40,
  }),
  buildBananaImagePreset({
    modelId: "gpt-image-2",
    displayName: "BananaImage GPT Image 2",
    description: "BananaImage GPT Image 2。支持文生图、图片编辑、最多 14 张参考图、比例选择和 1K/2K/4K 输出。",
    apiFormat: "bananaimage-gpt-image-2",
    supportedAspectRatios: BANANAIMAGE_GPT_IMAGE_2_RATIOS,
    sortOrder: 50,
  }),
];

export function getBananaImageModelPresetById(modelId: string) {
  return BANANAIMAGE_MODEL_PRESETS.find(
    (preset) => preset.modelId === String(modelId || "").trim()
  );
}

export function resolveBananaImageRuntimeModelId(modelId: string) {
  const preset = getBananaImageModelPresetById(modelId);
  const endpoint = preset?.defaultParams?.endpoint;

  if (typeof endpoint === "string" && endpoint.trim()) {
    return endpoint.trim();
  }

  return modelId;
}