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import { ProviderInfo, ModelData } from "../types/heatmap";

export async function fetchOrganizationData(authors: string[]) {
  try {
    // Fetch data for all authors
    const authorsData = await Promise.all(
      authors.map(async (author) => {
        try {
          // Try organizations API first
          const orgResponse = await fetch(`https://huggingface.co/api/organizations/${author}/overview`);
          if (orgResponse.ok) {
            const data = await orgResponse.json();
            return {
              author,
              fullName: data.fullname || author,
              avatarUrl: data.avatarUrl || null,
              isVerified: data.isVerified || false,
              isEnterprise: data.isEnterprise || false,
              numModels: data.numModels || 0,
              numSpaces: data.numSpaces || 0,
              numDatasets: data.numDatasets || 0,
              numFollowers: data.numFollowers || 0,
              numUsers: data.numUsers || 0,
            };
          }
          
          // Fallback to users API if organization doesn't exist
          const userResponse = await fetch(`https://huggingface.co/api/users/${author}/overview`);
          if (userResponse.ok) {
            const data = await userResponse.json();
            return {
              author,
              fullName: data.fullname || author,
              avatarUrl: data.avatarUrl || null,
              isVerified: false,
              isEnterprise: false,
              numModels: data.numModels || 0,
              numSpaces: data.numSpaces || 0,
              numDatasets: data.numDatasets || 0,
              numFollowers: data.numFollowers || 0,
              numUsers: 0,
            };
          }
          
          throw new Error('Neither organization nor user API returned valid data');
        } catch (error) {
          console.error(`Error fetching data for ${author}:`, error);
          return {
            author,
            fullName: author,
            avatarUrl: null,
            isVerified: false,
            isEnterprise: false,
            numModels: 0,
            numSpaces: 0,
            numDatasets: 0,
            numFollowers: 0,
            numUsers: 0,
          };
        }
      })
    );

    // Use the primary author for main display name and avatar
    const primaryAuthor = authorsData[0];
    
    // Aggregate stats from all authors
    const aggregatedStats = authorsData.reduce(
      (acc, authorData) => ({
        numModels: acc.numModels + (authorData.numModels || 0),
        numSpaces: acc.numSpaces + (authorData.numSpaces || 0),
        numDatasets: acc.numDatasets + (authorData.numDatasets || 0),
        numFollowers: acc.numFollowers + (authorData.numFollowers || 0),
        numUsers: acc.numUsers + (authorData.numUsers || 0),
      }),
      { numModels: 0, numSpaces: 0, numDatasets: 0, numFollowers: 0, numUsers: 0 }
    );

    return {
      fullName: primaryAuthor.fullName,
      avatarUrl: primaryAuthor.avatarUrl,
      isVerified: primaryAuthor.isVerified,
      isEnterprise: primaryAuthor.isEnterprise,
      authorsData, // Include all authors data for multi-logo display
      ...aggregatedStats,
    };
  } catch (error) {
    console.error(`Error fetching organization data for authors:`, error);
    const primaryAuthor = authors[0];
    return {
      fullName: primaryAuthor,
      avatarUrl: null,
      isVerified: false,
      isEnterprise: false,
      authorsData: [{ 
        author: primaryAuthor,
        fullName: primaryAuthor,
        avatarUrl: null,
        isVerified: false,
        isEnterprise: false,
        numModels: 0,
        numSpaces: 0,
        numDatasets: 0,
        numFollowers: 0,
        numUsers: 0,
      }],
      numModels: 0,
      numSpaces: 0,
      numDatasets: 0,
      numFollowers: 0,
      numUsers: 0,
    };
  }
}

export async function fetchAllProvidersData(providers: ProviderInfo[]): Promise<ProviderInfo[]> {
  return Promise.all(providers.map(async (providerInfo) => {
    const orgData = await fetchOrganizationData(providerInfo.authors);
    return { 
      ...providerInfo, 
      ...orgData
    };
  }));
}

export async function fetchAuthorData(author: string): Promise<ModelData[]> {
  const entityTypes = ["models", "datasets", "spaces"] as const;
  try {
    const allData = await Promise.all(
      entityTypes.map(async (type) => {
        const response = await fetch(
          `https://huggingface.co/api/${type}?author=${author}&sort=createdAt&direction=-1`
        );
        if (!response.ok) {
          throw new Error(`HTTP error! status: ${response.status}`);
        }
        const data = await response.json();
        return data.map((item: any): ModelData => ({
          createdAt: item.createdAt,
          id: item.id,
        }));
      })
    );

    return allData.flat();
  } catch (error) {
    console.error(`Error fetching data for author ${author}:`, error);
    return [];
  }
}

export async function fetchAllAuthorsData(authors: string[]): Promise<ModelData[]> {
  try {
    const allData = await Promise.all(
      authors.map(async (author) => await fetchAuthorData(author))
    );
    return allData.flat();
  } catch (error) {
    console.error("Error fetching data for all authors:", error);
    return [];
  }
}