Created
May 26, 2022 15:11
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the login.js file
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| loginBtn.addEventListener("click", function () { | |
| // show loading indicator. | |
| showLoading(); | |
| // get input user's credentials. | |
| const email = emailLoginInputElement ? emailLoginInputElement.value : null; | |
| const password = passwordLoginInputElement | |
| ? passwordLoginInputElement.value | |
| : null; | |
| if (isUserCredentialsValid({ email, password })) { | |
| // if the user's credentials are valid, call Firebase authentication service. | |
| auth | |
| .signInWithEmailAndPassword(email, password) | |
| .then((userCredential) => { | |
| const userEmail = userCredential.user.email; | |
| realTimeDb | |
| .ref() | |
| .child("users") | |
| .orderByChild("email") | |
| .equalTo(userEmail) | |
| .on("value", function (snapshot) { | |
| const val = snapshot.val(); | |
| if (val) { | |
| const keys = Object.keys(val); | |
| const user = val[keys[0]]; | |
| if (user && user.id) { | |
| CometChatWidget.init({ | |
| appID: `${config.CometChatAppId}`, | |
| appRegion: `${config.CometChatRegion}`, | |
| authKey: `${config.CometChatAuthKey}`, | |
| }).then( | |
| (response) => { | |
| CometChatWidget.login({ uid: user.id }).then( | |
| (loggedInUser) => { | |
| // User loged in successfully. | |
| // hide loading. | |
| hideLoading(); | |
| // redirect to home page. | |
| window.location.href = "/"; | |
| } | |
| ); | |
| }, | |
| (error) => { | |
| //Check the reason for error and take appropriate action. | |
| } | |
| ); | |
| } else { | |
| // hide loading indicator. | |
| hideLoading(); | |
| alert(`Your user's name or password is not correct`); | |
| } | |
| } | |
| }); | |
| }) | |
| .catch((error) => { | |
| console.log(error); | |
| // hide loading indicator. | |
| hideLoading(); | |
| alert(`Your user's name or password is not correct`); | |
| }); | |
| } else { | |
| // hide loading indicator. | |
| hideLoading(); | |
| alert(`Your user's name or password is not correct`); | |
| } | |
| }); |
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