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CMPE352‐Sequence Diagrams ‐ User & Account Management

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Selman Akman edited this page Oct 15, 2025 · 1 revision

Sign Up Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant ":AuthenticationService" as AuthService
participant "Database" as DB

title "Sign Up"

User -> System: signUp(username, email, password)
System -> UserObj: signUp(username, email, password)
UserObj -> AuthService: validateCredentials(username, email, password)
alt Valid Credentials
    AuthService --> UserObj: valid
    UserObj -> DB: checkUserExists(username, email)
    alt User Does Not Exist
        DB --> UserObj: notExists
        UserObj --> UserObj: generateUserID()
        UserObj -> DB: storeUser(userID, username, email, password)
        alt User Stored
            DB --> UserObj: success
            UserObj --> System: true
            System --> User: displayMessage("Account created successfully")
        else Database Error
            DB --> UserObj: error
            UserObj --> System: false
            System --> User: displayMessage("Failed to create account due to database error")
        end alt
    else User Exists
        DB --> UserObj: exists
        UserObj --> System: false
        System --> User: displayMessage("Username or email already in use")
    end alt
else Invalid Credentials
    AuthService --> UserObj: error
    UserObj --> System: false
    System --> User: displayMessage("Invalid username, email, or password (must be 8+ characters with letters and numbers)")
end alt

@enduml

Log In Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant ":AuthenticationService" as AuthService
participant "Database" as DB

title "Log In"

User -> System: logIn(email, password)
System -> UserObj: logIn(email, password)
UserObj -> AuthService: authenticateLogin(email, password)
alt Credentials Valid
    AuthService -> DB: verifyCredentials(email, password)
    alt User Found
        DB --> AuthService: userID
        AuthService --> UserObj: true
        UserObj --> System: true
        System --> User: displayMessage("Login successful")
    else User Not Found
        DB --> AuthService: notFound
        AuthService --> UserObj: false
        UserObj --> System: false
        System --> User: displayMessage("Invalid email or password")
    else Database Error
        DB --> AuthService: error
        AuthService --> UserObj: false
        UserObj --> System: false
        System --> User: displayMessage("Failed to log in due to database error")
    end alt
else Invalid Credentials
    AuthService --> UserObj: false
    UserObj --> System: false
    System --> User: displayMessage("Invalid email or password")
end alt

@enduml

Login via Google Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant ":AuthenticationService" as AuthService
participant "GoogleAPI" as GoogleAPI
participant "Database" as DB

title "Login via Google"

User -> System: logInViaGoogle(googleToken)
System -> UserObj: logInViaGoogle(googleToken)
UserObj -> AuthService: authenticateLogin(googleToken)
alt Valid Token
    AuthService -> GoogleAPI: verifyToken(googleToken)
    alt Token Verified
        GoogleAPI --> AuthService: userEmail
        AuthService -> DB: checkUserExists(userEmail)
        alt User Exists
            DB --> AuthService: userID
            AuthService --> UserObj: true
            UserObj --> System: true
            System --> User: displayMessage("Google login successful")
        else User Does Not Exist
            DB --> AuthService: notExists
            AuthService --> UserObj: false
            UserObj --> System: false
            System --> User: displayMessage("No account linked to this Google email")
        else Database Error
            DB --> AuthService: error
            AuthService --> UserObj: false
            UserObj --> System: false
            System --> User: displayMessage("Failed to log in due to database error")
        end alt
    else Invalid Token
        GoogleAPI --> AuthService: error
        AuthService --> UserObj: false
        UserObj --> System: false
        System --> User: displayMessage("Invalid Google token")
    end alt
else Invalid Input
    AuthService --> UserObj: false
    UserObj --> System: false
    System --> User: displayMessage("Invalid Google token")
end alt

@enduml

Reset Password Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant ":EmailService" as EmailService
participant "Database" as DB

title "Reset Password"

User -> System: resetPassword(email)
System -> UserObj: resetPassword(email)
UserObj -> DB: checkUserExists(email)
alt User Exists
    DB --> UserObj: userID
    UserObj -> EmailService: sendResetLink(email)
    alt Email Sent
        EmailService --> UserObj: success
        UserObj --> System: true
        System --> User: displayMessage("Password reset link sent to your email")
    else Email Error
        EmailService --> UserObj: error
        UserObj --> System: false
        System --> User: displayMessage("Failed to send reset link")
    end alt
else User Not Found
    DB --> UserObj: notFound
    UserObj --> System: false
    System --> User: displayMessage("Email not found")
else Database Error
    DB --> UserObj: error
    UserObj --> System: false
    System --> User: displayMessage("Failed to reset password due to database error")
end alt

@enduml

View Profile Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant "Database" as DB

title "View Profile"

User -> System: viewProfile()
System -> UserObj: getUserID()
alt User Authenticated
    UserObj --> System: userID
    System -> UserObj: viewProfile()
    UserObj -> DB: fetchProfile(userID)
    alt Profile Found
        DB --> UserObj: UserProfile
        UserObj --> System: UserProfile
        System --> User: displayMessage("Profile displayed", UserProfile)
    else Profile Not Found
        DB --> UserObj: notFound
        UserObj --> System: null
        System --> User: displayMessage("Profile not found")
    else Database Error
        DB --> UserObj: error
        UserObj --> System: null
        System --> User: displayMessage("Failed to fetch profile due to database error")
    end alt
else User Not Authenticated
    UserObj --> System: error
    System --> User: displayMessage("Please log in to view profile")
end alt

@enduml

Edit Profile Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant "Database" as DB

title "Edit Profile"

User -> System: editProfile(profileData)
System -> UserObj: getUserID()
alt User Authenticated
    UserObj --> System: userID
    System -> UserObj: editProfile(profileData)
    alt Valid Profile Data
        UserObj -> DB: updateProfile(userID, profileData)
        alt Profile Updated
            DB --> UserObj: success
            UserObj --> System: true
            System --> User: displayMessage("Profile updated successfully")
        else Database Error
            DB --> UserObj: error
            UserObj --> System: false
            System --> User: displayMessage("Failed to update profile due to database error")
        end alt
    else Invalid Profile Data
        UserObj --> System: false
        System --> User: displayMessage("Invalid profile data")
    end alt
else User Not Authenticated
    UserObj --> System: error
    System --> User: displayMessage("Please log in to edit profile")
end alt

@enduml

Upload Profile Picture Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant "Database" as DB

title "Upload Profile Picture"

User -> System: uploadProfilePicture(image)
System -> UserObj: getUserID()
alt User Authenticated
    UserObj --> System: userID
    System -> UserObj: uploadProfilePicture(image)
    alt Valid Image
        UserObj -> DB: storeProfilePicture(userID, image)
        alt Picture Stored
            DB --> UserObj: imageURL
            UserObj --> System: imageURL
            System --> User: displayMessage("Profile picture uploaded successfully")
        else Database Error
            DB --> UserObj: error
            UserObj --> System: null
            System --> User: displayMessage("Failed to upload profile picture due to database error")
        end alt
    else Invalid Image
        UserObj --> System: null
        System --> User: displayMessage("Invalid image file")
    end alt
else User Not Authenticated
    UserObj --> System: error
    System --> User: displayMessage("Please log in to upload profile picture")
end alt

@enduml

Add Bio/Description Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant "Database" as DB

title "Add Bio/Description"

User -> System: addBio(bioText)
System -> UserObj: getUserID()
alt User Authenticated
    UserObj --> System: userID
    System -> UserObj: addBio(bioText)
    alt Valid Bio
        UserObj -> DB: storeBio(userID, bioText)
        alt Bio Stored
            DB --> UserObj: success
            UserObj --> System: true
            System --> User: displayMessage("Bio updated successfully")
        else Database Error
            DB --> UserObj: error
            UserObj --> System: false
            System --> User: displayMessage("Failed to update bio due to database error")
        end alt
    else Invalid Bio
        UserObj --> System: false
        System --> User: displayMessage("Invalid bio text")
    end alt
else User Not Authenticated
    UserObj --> System: error
    System --> User: displayMessage("Please log in to add bio")
end alt

@enduml

Set User Location Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant "Database" as DB

title "Set User Location"

User -> System: setLocation(location)
System -> UserObj: getUserID()
alt User Authenticated
    UserObj --> System: userID
    System -> UserObj: setLocation(location)
    alt Valid Location
        UserObj -> DB: storeLocation(userID, location)
        alt Location Stored
            DB --> UserObj: success
            UserObj --> System: true
            System --> User: displayMessage("Location updated successfully")
        else Database Error
            DB --> UserObj: error
            UserObj --> System: false
            System --> User: displayMessage("Failed to update location due to database error")
        end alt
    else Invalid Location
        UserObj --> System: false
        System --> User: displayMessage("Invalid location")
    end alt
else User Not Authenticated
    UserObj --> System: error
    System --> User: displayMessage("Please log in to set location")
end alt

@enduml

Enable/Disable Notifications Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant "Database" as DB

title "Enable/Disable Notifications"

User -> System: manageNotifications(enabled)
System -> UserObj: getUserID()
alt User Authenticated
    UserObj --> System: userID
    System -> UserObj: manageNotifications(enabled)
    UserObj -> DB: updateNotificationSettings(userID, enabled)
    alt Settings Updated
        DB --> UserObj: success
        UserObj --> System: true
        System --> User: displayMessage("Notification settings updated successfully")
    else Database Error
        DB --> UserObj: error
        UserObj --> System: false
        System --> User: displayMessage("Failed to update notification settings due to database error")
    end alt
else User Not Authenticated
    UserObj --> System: error
    System --> User: displayMessage("Please log in to manage notifications")
end alt

@enduml

Delete/Deactivate Account Sequence Diagram

Diagram

image

Code

@startuml
actor User
participant ":System" as System
participant ":User" as UserObj
participant "Database" as DB

title "Delete/Deactivate Account"

User -> System: deleteAccount()
System -> UserObj: getUserID()
alt User Authenticated
    UserObj --> System: userID
    System -> UserObj: deleteAccount()
    UserObj -> DB: deleteUser(userID)
    alt Account Deleted
        DB --> UserObj: success
        UserObj --> System: true
        System --> User: displayMessage("Account deleted successfully")
    else Database Error
        DB --> UserObj: error
        UserObj --> System: false
        System --> User: displayMessage("Failed to delete account due to database error")
    end alt
else User Not Authenticated
    UserObj --> System: error
    System --> User: displayMessage("Please log in to delete account")
end alt

@enduml

Admin Managing User Accounts Sequence Diagram

Diagram

image

Code

@startuml
actor Admin
participant ":System" as System
participant ":Admin" as AdminObj
participant ":User" as UserObj
participant "Database" as DB

title "Admin Managing User Accounts"

Admin -> System: manageUserAccount(userID, action, profileData?)
System -> AdminObj: verifyAdmin()
alt Admin Authorized
    AdminObj --> System: adminID
    System -> AdminObj: manageUserAccount(userID, action, profileData?)
    AdminObj -> DB: checkUserExists(userID)
    alt User Exists
        DB --> AdminObj: userExists
        alt Action = Edit
            AdminObj -> UserObj: editProfile(profileData)
            alt Valid Profile Data
                UserObj -> DB: updateProfile(userID, profileData)
                DB --> UserObj: success
                UserObj --> AdminObj: true
                AdminObj --> System: true
                System --> Admin: displayMessage("User profile updated successfully")
            else Invalid Profile Data
                UserObj --> AdminObj: false
                AdminObj --> System: false
                System --> Admin: displayMessage("Invalid profile data")
            end alt
        else Action = Delete
            AdminObj -> UserObj: deleteAccount()
            UserObj -> DB: deleteUser(userID)
            DB --> UserObj: success
            UserObj --> AdminObj: true
            AdminObj --> System: true
            System --> Admin: displayMessage("User account deleted successfully")
        else Action = Create
            AdminObj -> UserObj: signUp(username, email, password)
            UserObj -> DB: storeUser(userID, username, email, password)
            DB --> UserObj: success
            UserObj --> AdminObj: true
            AdminObj --> System: true
            System --> Admin: displayMessage("User account created successfully")
        end alt
    else User Not Found
        DB --> AdminObj: notFound
        AdminObj --> System: false
        System --> Admin: displayMessage("Invalid user ID")
    else Database Error
        DB --> AdminObj: error
        AdminObj --> System: false
        System --> Admin: displayMessage("Failed to manage account due to database error")
    end alt
else Admin Not Authorized
    AdminObj --> System: error
    System --> Admin: displayMessage("Unauthorized: Admin access required")
end alt

@enduml

Moderator Reviewing Reports Sequence Diagram

Diagram

image

Code

@startuml
actor Moderator
participant ":System" as System
participant ":Moderator" as ModeratorObj
participant "Database" as DB

title "Moderator Reviewing Reports"

Moderator -> System: reviewReport(reportID, action)
System -> ModeratorObj: verifyModerator()
alt Moderator Authorized
    ModeratorObj --> System: moderatorID
    System -> ModeratorObj: reviewReport(reportID, action)
    ModeratorObj -> DB: checkReportExists(reportID)
    alt Report Exists
        DB --> ModeratorObj: reportData
        alt Valid Action
            ModeratorObj -> DB: updateReportStatus(reportID, action)
            alt Report Updated
                DB --> ModeratorObj: success
                ModeratorObj --> System: true
                System --> Moderator: displayMessage("Report processed successfully")
            else Database Error
                DB --> ModeratorObj: error
                ModeratorObj --> System: false
                System --> Moderator: displayMessage("Failed to process report due to database error")
            end alt
        else Invalid Action
            ModeratorObj --> System: false
            System --> Moderator: displayMessage("Invalid action")
        end alt
    else Report Not Found
        DB --> ModeratorObj: notFound
        ModeratorObj --> System: false
        System --> Moderator: displayMessage("Invalid report ID")
    else Database Error
        DB --> ModeratorObj: error
        ModeratorObj --> System: false
        System --> Moderator: displayMessage("Failed to fetch report due to database error")
    end alt
else Moderator Not Authorized
    ModeratorObj --> System: error
    System --> Moderator: displayMessage("Unauthorized: Moderator access required")
end alt

@enduml

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