import axios, { AxiosResponse } from 'axios';

export async function storeData(servers: string[], key: string, value: Blob, ttl: number | null): Promise<AxiosResponse | null> {
  for (const server of servers) {
    try {
      // Append key and ttl as query parameters
      const url = new URL(`${server}/store`);
      url.searchParams.append('key', key);
      if (ttl !== null) {
        url.searchParams.append('ttl', ttl.toString());
      }

      // Send the encrypted ArrayBuffer as the raw request body.
      const response = await axios.post(url.toString(), value, {
        headers: {
          'Content-Type': 'application/octet-stream'
        },
      });
      console.log('Data stored successfully:', key);
      if (response.status !== 200) {
        console.error('Received response status', response.status);
        continue;
      }
      return response;
    } catch (error) {
      if (axios.isAxiosError(error) && error.response?.status === 409) {
        return null;
      }
      console.error('Error storing data:', error);
    }
  }
  return null;
}

export async function retrieveData(servers: string[], key: string): Promise<ArrayBuffer | null> {
  for (const server of servers) {
    try {
      // When fetching the data from the server:
      const response = await axios.get(`${server}/retrieve/${key}`, {
        responseType: 'arraybuffer' 
      });
      if (response.status !== 200) {
          console.error('Received response status', response.status);
          continue;
      }
      // console.log('Retrieved data:', response.data);
      return response.data;
    } catch (error) {
        console.error('Error retrieving data:', error);
    }
  }
  return null
}

interface TestResponse {
    key: string;
    value: boolean;
}

export async function testData(servers: string[], key: string): Promise<Record<string, boolean | null> | null> {
    const res: Record<string, boolean | null> = {};
    for (const server of servers) {
        res[server] = null;
        try {
            const response = await axios.get(`${server}/test/${key}`);
            if (response.status !== 200) {
                console.error(`${server}: Test response status: ${response.status}`);
                continue;
            }
            
            const data: TestResponse = response.data;
            
            res[server] = data.value;
        } catch (error) {
            console.error('Error retrieving data:', error);
            return null;
        }
    }
    
    return res;
}