import { firebase, firestore } from '../firebase.js';

//Start Firbase Auth
export const AUTH_FAIL      = 'AUTH_FAIL';
export const AUTH_SUCCESS   = 'AUTH_SUCCESS';
export const AUTH_SIGN_OUT  = 'AUTH_SIGN_OUT';
export const CREATE_ACCOUNT = 'CREATE_ACCOUNT';
export const ADMIN_LISTENER = 'ADMIN_LISTENER';
export const IS_ADMIN       = 'IS_ADMIN';
export const ADMIN_CONTROLS = 'ADMIN_CONTROLS';
export const UPDATE_ADMIN   = 'UPDATE_ADMIN';
export const SET_USER_DATA  = 'SET_USER_DATA';

const auth = firebase.auth();

export const createAccount = (_email, _password, divison) => (dispatch) => {
  firebase.auth().createUserWithEmailAndPassword(_email, _password).then(() => {
    dispatch(signIn(_email, _password, divison));
  })
  .catch((error) => {
  // Handle Errors here.
  alert(error.code + ": " + error.message);
  });
}

export const signIn  = (_email, _password, divison) => (dispatch) => {
  auth.signInWithEmailAndPassword(_email, _password).then(() => {
    var user  = auth.currentUser;
    /* User is signed in.
    var displayName = user.displayName;
    var email = user.email;
    var emailVerified = user.emailVerified;
    var photoURL = user.photoURL;
    var isAnonymous = user.isAnonymous;
    var uid = user.uid;
    var providerData = user.providerData;
    */
    dispatch(authSuccess(user));
    if(divison) {
      console.log(divison);
      dispatch(setUserData(divison));
    }
    dispatch(snapshotHours())
    dispatch(snapshotRegisteredCompetitions());
    //Admin controls
    if( user.uid  === 'rxKROQAukzchWuueDLwA9c0YmsT2' || //Lucy Wood
        user.uid  === 'sAVjlnSAETaP5VtTKGhfBKHKeQF2'    //Michael Foiani
      )
    {
      dispatch(adminListener());
    }
  })
  .catch((error) => {
    dispatch(authFail(error.code));
  });

}

export const setUserData = (_divison) => (dispatch, getState) => {
  const uid   = getState().firebase.uid;
  var docRef  = firestore.collection('users').doc(uid);
  docRef.set({
    hours:    0,
    divison: _divison
  }).catch((error) => {
    console.log(error);
  })
}

export const adminListener = () => (dispatch, getState) => {
  document.onkeyup = function(e) {
    if(e.altKey && e.which == 65) {
      var docRef  = firestore.collection('keys').doc('adminKey');
      docRef.get().then((doc) => {
        if(prompt('Enter admin password') == doc.data().password) {
          dispatch(adminControls());
        }
      });
    }
  }
}

export const authFail = (errorCode) => {
  alert(errorCode);
  return {
    type:     AUTH_FAIL,
    payload:  false,
    code:     errorCode,
    uid:      null
  }
}

export const authSuccess = (_user) => {
  alert('Sign In Success');
  return {
    type:       AUTH_SUCCESS,
    payload:    true,
    code:       "Success",
    uid:        _user.uid,
    userEmail:  _user.email
  }
}

export const adminControls = () => (dispatch) => {
  dispatch(updateAdmin());
  dispatch(snapshotAdminRequests());
  dispatch(snapshotAdminCompList());
}

export const updateAdmin = () => {
  return {
    type:     UPDATE_ADMIN,
    payload:  true
  }
}

export const signOut = () => (dispatch) => {
  auth.signOut().then(() => {
    dispatch(authSignOut());
  });
}

export const authSignOut = () => {
  return {
    type:       AUTH_SIGN_OUT,
    payload:    false,
    code:       "Signed Out User",
    uid:        "",
    userEmail:  "",
    isAdmin:    false,
    requests:   [],
    compList:   []
  }
}
//End Firebase Auth

//Start Firebase Firestore
export const SNAPSHOT_HOURS = 'SNAPSHOT_HOURS';
export const UPDATE_HOURS   = 'UPDATE_HOURS';

export const snapshotHours = () => (dispatch, getState) => {

  const currentState  = getState().firebase;
  if(currentState.initialized) {
    var totalHours;
    var docRefUsers = firestore.collection('users').doc(currentState.uid);
    var docRefReq   = firestore.collection('requests').where('uid', '==', currentState.uid);

    docRefUsers.onSnapshot((doc) => {
      totalHours  = doc.data().hours;

      docRefReq.onSnapshot((query) => {
        var requestedHours  = 0;
        query.forEach((docs) => {
          requestedHours  += docs.data().time;
        });
        dispatch(updateHours(totalHours, requestedHours));
      });
    });
  }



}

export const updateHours = (hours, reqHours) => {
  return {
    type:           'UPDATE_HOURS',
    approvedHours:  hours,
    requestedHours: reqHours
  }
}

export const REGISTER_COMP                    = 'REGISTER_COMP';
export const SNAPSHOT_REGISTERED_COMPETITIONS = 'SNAPSHOT_REGISTERED_COMPETITIONS';
export const UPDATE_REGISTERED_COMPETITIONS   = 'UPDATE_REGISTERED_COMPETITIONS';
export const SNAPSHOT_ADMIN_COMP_LIST         = 'SNAPSHOT_ADMIN_COMP_LIST';
export const UPDATE_ADMIN_COMP_LIST           = 'UPDATE_ADMIN_COMP_LIST';

export const registerComp = (compName) => (dispatch, getState) => {
  var docRef  = firestore.collection('competitions').doc(compName);
  var uid     = getState().firebase.uid;
  var email   = getState().firebase.userEmail;

  docRef.get().then((doc) => {
    if(doc.exists) {
      var uidArr    = doc.data().uids;
      var emailArr  = doc.data().emails;

      uidArr.push(uid);
      emailArr.push(email);

      docRef.set({
        uids:   uidArr,
        emails: emailArr
      });
    } else {
      docRef.set({
        uids  : [uid],
        emails: [email]
      });
    }
  });
}

export const snapshotRegisteredCompetitions = () => (dispatch, getState) => {
  var docRef  = firestore.collection('competitions');
  docRef.onSnapshot((querySnapshot) => {
    var registeredComps = [];
    querySnapshot.forEach((doc) => {
      if(doc.exists && doc.data().uids.includes(getState().firebase.uid)) {
        registeredComps.push(doc.id);
      }
    });
    dispatch(updateRegisteredCompetitions(registeredComps));
  });
}


export const updateRegisteredCompetitions = (registeredComps) => {
  return {
    type:     UPDATE_REGISTERED_COMPETITIONS,
    payload:  registeredComps
  }
}

export const snapshotAdminCompList = () => (dispatch) => {
  var docRef  = firestore.collection('competitions');
  docRef.onSnapshot((querySnapshot) => {
    var compList = [];
    querySnapshot.forEach((doc) => {
        compList.push({
          ...doc.data(),
          name: doc.id
        });
    });
    dispatch(updateAdminCompList(compList));
  });
}

export const updateAdminCompList = (compList) => {
  return {
    type:     UPDATE_ADMIN_COMP_LIST,
    payload:  compList
  }
}

export const REQUEST_HOURS            = 'REQUEST_HOURS';
export const ADMIN_APPROVE_HOURS      = 'ADMIN_APPROVE_HOURS';
export const ADMIN_REJECT_HOURS       = 'ADMIN_REJECT_HOURS';
export const ADMIN_DELETE_REQUEST     = 'ADMIN_DELETE_REQUEST';
export const SNAPSHOT_ADMIN_REQUESTS  = 'SNAPSHOT_ADMIN_REQUESTS';
export const UPDATE_ADMIN_REQUESTS    = 'UPDATE_ADMIN_REQUESTS';

export const requestHours = (_time, _trainee, _date) => (dispatch, getState) => {
  var docRef    = firestore.collection('requests');
  const _uid    = getState().firebase.uid;
  const _email  = getState().firebase.userEmail;

  docRef.add({
    time:     _time,
    trainee:  _trainee,
    day:      _date,
    uid:      _uid,
    email:    _email
  });

  docRef  = firestore.collection('users').doc(_uid);

  docRef.get().then((doc) => {
    if(doc.exists) {
      docRef.set({
        hours:  doc.data().hours
      });
    }
  });
}

export const snapshotAdminRequests = () => (dispatch) => {
  var docRef    = firestore.collection('requests');

  docRef.onSnapshot((querySnapshot) => {
    var requestList = [];
    querySnapshot.forEach((doc) => {
      requestList.push({
        ...doc.data(),
        docId: doc.id
      });
    });
    dispatch(updateAdminRequests(requestList));
  });
}

export const updateAdminRequests = (requests) => {
  return {
    type:     UPDATE_ADMIN_REQUESTS,
    payload:  requests
  }
}

export const adminApproveHours = (_uid, _time, _id) => (dispatch) => {

  var docRef    = firestore.collection('users').doc(_uid);

  docRef.get().then((doc) => {
    if(doc.exists) {
        docRef.update({
          hours:  (doc.data().hours + _time)
        }).catch((error) => {
          alert(error);
        });
    }
  });

  dispatch(adminDeleteRequest(_id));
}

export const adminRejectHours = (_id) => (dispatch) => {
  dispatch(adminDeleteRequest(_id));
}

export const adminDeleteRequest = (_id) => (dispatch) => {
  var docRef  = firestore.collection('requests').doc(_id);
  docRef.delete().then(() => {
    //console.log('Deleted request with id ' + _id);
  });
}


export const CREATE_FOURM_POST  = 'CREATE_FOURM_POST';
export const SNAPSHOT_FOURM     = 'SNAPSHOT_FOURM';
export const UPDATE_FOURM_POSTS = 'UPDATE_FOURM_POSTS';

export const createFourmPost = (_subject, _content) => (dispatch, getState) => {
  var docRef      = firestore.collection('posts');
  const userEmail = getState().firebase.userEmail;

  docRef.add({
    email:    userEmail,
    subject:  _subject,
    content:  _content
  });
}

export const snapshotFourms = () => (dispatch) => {
  var docRef      = firestore.collection('posts');

  docRef.onSnapshot((query) => {
    var fourmPosts  = [];
    query.forEach((doc) => {
      fourmPosts.push(doc.data());
    });
    dispatch(updateFourmPosts(fourmPosts));
  });
}

export const updateFourmPosts = (_fourmPosts) => {
  return {
    type:     UPDATE_FOURM_POSTS,
    payload:  _fourmPosts
  }
}
//End Firebase Firestore