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

export const UPDATE_DIVISON                   = 'UPDATE_DIVISON';
export const UPDATE_HOURS                     = 'UPDATE_HOURS';
export const UPDATE_REGISTERED_COMPETITIONS   = 'UPDATE_REGISTERED_COMPETITIONS';
export const UPDATE_FORUM_POSTS               = 'UPDATE_FORUM_POSTS';
export const UPDATE_NOTIFICATION              = 'UPDATE_NOTIFICATION';

export const updateDivison = (divison) => {
  return {
    type:     UPDATE_DIVISON,
    payload:  divison
  }
}

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

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

export const updateForumPosts = (_forumPosts) => {
  return {
    type:     UPDATE_FORUM_POSTS,
    payload:  _forumPosts
  }
}

export const updateNotification = (status) => {
  return {
    type:    UPDATE_NOTIFICATION,
    payload: status
  }
}

//Middleware to dispatches

export const fetchDivison = () => (dispatch, getState) => {
  const uid   = getState().firebaseAuth.uid;
  var docRef  = firestore.collection('users').doc(uid);
  docRef.get().then((doc) => {
    dispatch(updateDivison(doc.data().divison));
  });
}

export const snapshotHours = () => (dispatch, getState) => {
  const currentAuthState  = getState().firebaseAuth;
  if(currentAuthState.signedIn) {
    var totalHours;
    var docRefUsers = firestore.collection('users').doc(currentAuthState.uid);
    var docRefReq   = firestore.collection('requests').where('uid', '==', currentAuthState.uid);
    docRefUsers.onSnapshot((doc) => {
      totalHours  = doc.data().hours;
      docRefReq.onSnapshot((query) => {
        if(getState().firebaseFirestore.isAdminUpdate) {
          alert("One of your hours requests has been approved or denied.\nGo to dashboard to see changes.")
        }
        var requestedHours  = 0;
        query.forEach((docs) => {
          requestedHours  += docs.data().time;
        });
        dispatch(updateHours(totalHours, requestedHours));
        dispatch(updateNotification(true));
      });
    });
  }
}

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().firebaseAuth.uid)) {
        registeredComps.push(doc.id);
      }
    });
    dispatch(updateRegisteredCompetitions(registeredComps));
  });
}

export const snapshotForums = () => (dispatch) => {
  var docRef      = firestore.collection('posts');
  docRef.onSnapshot((query) => {
    var forumPosts  = [];
    query.forEach((doc) => {
      forumPosts.push({
        ...doc.data(),
        postId: doc.id
      });
    });
    dispatch(updateForumPosts(forumPosts));
  });
}

//Do not dipatch to store, only update firebaseFirestore

export const setUserData = (_divison) => (dispatch, getState) => {
  var _uid   = getState().firebaseAuth.uid;
  var username = getState().firebaseAuth.userEmail.replace('@communityschoolnaples.org', '');
  firestore.collection('users').doc(_uid)
  .set({
    hours:    0,
    divison: _divison,
    username
  }).catch((error) => {
    console.log(error);
  })
}

export const requestHours = (_time, _trainee, _location, _subject, _date, _pictureName) => (dispatch, getState) => {
  if(getState().app.offline) {
    alert("Failed to create hour request. Must have internet connection.")
  } else {
    dispatch(updateNotification(false));
    var docRef    = firestore.collection('requests');
    const _uid    = getState().firebaseAuth.uid;
    const _email  = getState().firebaseAuth.userEmail;
    const _path   = 'requests/' + _uid + '/' + _pictureName;
  
    var fireStorageRef  = fireStorage.ref().child(_path);
    fireStorageRef.getDownloadURL().then((url) => {
      docRef.add({
        time:     _time,
        trainee:  _trainee,
        location: _location,
        subject:  _subject,
        day:      _date,
        imgUrl:   url,
        path:     _path,
        uid:      _uid,
        email:    _email
      }).then(()=> {
        alert("Successfuly sent hours request for " + _time*60 + " minutes.\n"
              + "If it is approved, it will update on your dashboard.");
      }).catch((error) => {
        alert(error);
      });
    });
  }
}

export const registerComp = (compName) => (dispatch, getState) => {
  if(getState().app.offline) {
    alert("Failed to register. Please establish internet connection.")
  } else {
    var docRef  = firestore.collection('competitions').doc(compName);
    var uid     = getState().firebaseAuth.uid;
    var email   = getState().firebaseAuth.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
        }).then(()=> {
          alert("Successfuly registered for " + compName.replace(/[0-9]/g, '').replace('_', ' ') + ".");
        }).catch((error) => {
          alert(error);
        });
      } else {
        docRef.set({
          uids  : [uid],
          emails: [email]
        }).then(()=> {
          alert("Successfuly registered for " + compName.replace(/[0-9]/g, '').replace('_', ' ') + ".");
        }).catch((error) => {
          alert(error);
        });
      }
    }).catch((error) => {
      alert(error);
    });
  }
}


export const createForumPost = (_subject, _content) => (dispatch, getState) => {
  if(getState().app.offline) {
    alert("Failed to create forum post. Please establish internet connection.")
  } else {
    var docRef      = firestore.collection('posts');
    const userEmail = getState().firebaseAuth.userEmail;
    docRef.add({
      email:    userEmail,
      subject:  _subject,
      content:  _content,
      day:      new Date()
    }).then(()=> {
      alert("Successfuly posted forum with subject " + _subject + ".");
    }).catch((error) => {
      alert(error);
    });
  }
}

export const createComment = (postId, content) => (dispatch, getState) => {
  if(getState().app.offline) {
    alert("Failed to create comment post. Please establish internet connection.")
  } else {
    var docRef  = firestore.collection('posts').doc(postId);
    docRef.get().then((doc) => {
      var comments = doc.data().comments ? doc.data().comments : [];
      comments.push({
        content,
        user : getState().firebaseAuth.userEmail.replace('@communityschoolnaples.org', ''),
        date: new Date()
      });
      docRef.update({
        comments
      });
    })
    .catch((error) => {
      alert(error);
    });
  }
}

//TODO: Make it per year, not hard coded...

export const archiveClass2019 = () => (dispatch, getState) => {
  if(getState().app.offline) {
    alert('Failed to archive class. Please establish internet connection.');
  } else {
    var docRef  = firestore.collection('users');
    docRef.get().then((oldUsers) => {
      oldUsers.forEach((user) => {
        var newPath = firestore.collection('archived').doc('2019').collection('users');
        newPath.doc(user.id).set(user.data());

        if(user.data().username && user.data().username.includes('2019')) {
          console.log(user.data().username, user.id);
          docRef.doc(user.id).delete();
        }
        
        docRef.doc(user.id).update({hours: 0});

      });
    });
  }
}

export const archiveCompetitions2019 = () => (dispatch, getState) => {
  if(getState().app.offline) {
    alert('Failed to archive competitions. Please establish internet connection.');
  } else {
    var docRef  = firestore.collection('competitions');
    docRef.get().then((oldCompetitions) => {
      oldCompetitions.forEach((comp) => {
        console.log(comp.id, comp.data());
        var newPath = firestore.collection('archived').doc('2019').collection('competitions');
        newPath.doc(comp.id).set(comp.data());

        //This will delete the document in its old place...
        docRef.doc(comp.id).delete();

      });
    });

  }
}