export const fetchPathKeys = () => {
  return fetch("http://localhost:5000/get-path")
    .then(res => {
      if(res.status >= 400) {
        throw new Error("Server responds with error!");
      }
      return res.json();
    }).then(data => {
      return Object.keys(data)
    }, err => {
      console.log(err)
    });
}


export const fetchPaths = () => {
  return fetch("http://localhost:5000/get-path")
    .then(res => {
      if(res.status >= 400) {
          throw new Error("Server responds with error!");
      }
      return res.json();
    }).then(data => {
      return data
    }, err => {
      console.log(err)
    })
}


export function savePathToDb(){
  let path = this.props.path
  if ("switchLatLng" in this.props){
    path = path.map(pos => [pos[1], pos[0]])
  }
  let json = JSON.stringify({
      path: {
        name: this.state.savePathKey,
        coords: path
      }
    })
  let reqOptions = {
    method: 'POST',
    headers: {
      'Accept': 'application/json',
      'Content-Type': 'application/json',
    },
    body: json
  }

  return fetch("http://localhost:5000/set-path", reqOptions)
    .then(res => {
      if(res.status >= 400) {
          throw new Error("Server responds with error!");
      }
      return res.text();
    }, err => {
      console.log(err)
    })
}


export function saveTimeToDb(data){
  let json = JSON.stringify(data)
  let reqOptions = {
    method: 'POST',
    headers: {
      'Accept': 'application/json',
      'Content-Type': 'application/json',
    },
    body: json
  }

  return fetch("http://localhost:5000/set-time", reqOptions)
    .then(res => {
      if(res.status >= 400) {
        console.log(res.text)
          throw new Error("Server responds with error!");
      }
      return res.text();
    }, err => {
      console.log(err)
    })
}