// Type definitions for Firebase API 2.0.2
// Project: https://www.firebase.com/docs/javascript/firebase
// Definitions by: Vincent Botone , Shin1 Kashimura 
// Definitions: https://github.com/borisyankov/DefinitelyTyped

interface FirebaseAuthResult {
    auth: any;
    expires: number;
}

interface FirebaseDataSnapshot {
    /**
     * Gets the JavaScript object representation of the DataSnapshot.
     */
    val(): any;
    /**
     * Gets a DataSnapshot for the location at the specified relative path.
     */
    child(childPath: string): FirebaseDataSnapshot;
    /**
     * Enumerates through the DataSnapshots children (in the default order).
     */
    forEach(childAction: (childSnapshot: FirebaseDataSnapshot) => void): boolean;
    forEach(childAction: (childSnapshot: FirebaseDataSnapshot) => boolean): boolean;
    /**
     * Returns true if the specified child exists.
     */
    hasChild(childPath: string): boolean;
    /**
     * Returns true if the DataSnapshot has any children.
     */
    hasChildren(): boolean;
    /**
     * Gets the key name of the location that generated this DataSnapshot.
     */
    key(): string;
    /**
     * @deprecated Use key() instead.
     * Gets the key name of the location that generated this DataSnapshot.
     */
    name(): string;
    /**
     * Gets the number of children for this DataSnapshot.
     */
    numChildren(): number;
    /**
     * Gets the Firebase reference for the location that generated this DataSnapshot.
     */
    ref(): Firebase;
    /**
     * Gets the priority of the data in this DataSnapshot.
     * @returns {string, number, null} The priority, or null if no priority was set.
     */
    getPriority(): any; // string or number
    /**
     * Exports the entire contents of the DataSnapshot as a JavaScript object.
     */
    exportVal(): Object;
}

interface FirebaseOnDisconnect {
    /**
     * Ensures the data at this location is set to the specified value when the client is disconnected 
     * (due to closing the browser, navigating to a new page, or network issues).
     */
    set(value: any, onComplete?: (error: any) => void): void;
    /**
     * Ensures the data at this location is set to the specified value and priority when the client is disconnected 
     * (due to closing the browser, navigating to a new page, or network issues).
     */
    setWithPriority(value: any, priority: string, onComplete?: (error: any) => void): void;
    setWithPriority(value: any, priority: number, onComplete?: (error: any) => void): void;
    /**
     * Writes the enumerated children at this Firebase location when the client is disconnected 
     * (due to closing the browser, navigating to a new page, or network issues).
     */
    update(value: Object, onComplete?: (error: any) => void): void;
    /**
     * Ensures the data at this location is deleted when the client is disconnected 
     * (due to closing the browser, navigating to a new page, or network issues).
     */
    remove(onComplete?: (error: any) => void): void;
    /**
     * Cancels all previously queued onDisconnect() set or update events for this location and all children.
     */
    cancel(onComplete?: (error: any) => void): void;
}

interface FirebaseQuery {
    /**
     * Listens for data changes at a particular location.
     */
    on(eventType: string, callback: (dataSnapshot: FirebaseDataSnapshot, prevChildName?: string) => void, cancelCallback?: (error: any) => void, context?: Object): (dataSnapshot: FirebaseDataSnapshot, prevChildName?: string) => void;
    /**
     * Detaches a callback previously attached with on().
     */
    off(eventType?: string, callback?: (dataSnapshot: FirebaseDataSnapshot, prevChildName?: string) => void, context?: Object): void;
    /**
     * Listens for exactly one event of the specified event type, and then stops listening.
     */
    once(eventType: string, successCallback: (dataSnapshot: FirebaseDataSnapshot) => void, context?: Object): void;
    once(eventType: string, successCallback: (dataSnapshot: FirebaseDataSnapshot) => void, failureCallback?: (error: any) => void, context?: Object): void;
    /**
     * Generates a new Query object ordered by the specified child key.
     */
    orderByChild(key: string): FirebaseQuery;
    /**
     * Generates a new Query object ordered by key name.
     */
    orderByKey(): FirebaseQuery;
    /**
     * Generates a new Query object ordered by priority.
     */
    orderByPriority(): FirebaseQuery;
    /**
     * @deprecated Use limitToFirst() and limitToLast() instead.
     * Generates a new Query object limited to the specified number of children.
     */
    limit(limit: number): FirebaseQuery;
    /**
     * Creates a Query with the specified starting point. 
     * The generated Query includes children which match the specified starting point.
     */
    startAt(value: string, key?: string): FirebaseQuery;
    startAt(value: number, key?: string): FirebaseQuery;
    /**
     * Creates a Query with the specified ending point. 
     * The generated Query includes children which match the specified ending point.
     */
    endAt(value: string, key?: string): FirebaseQuery;
    endAt(value: number, key?: string): FirebaseQuery;
    /**
     * Creates a Query which includes children which match the specified value.
     */
    equalTo(value: string, key?: string): FirebaseQuery;
    equalTo(value: number, key?: string): FirebaseQuery;
    /**
     * Generates a new Query object limited to the first certain number of children.
     */
    limitToFirst(limit: number): FirebaseQuery;
    /**
     * Generates a new Query object limited to the last certain number of children.
     */
    limitToLast(limit: number): FirebaseQuery;
    /**
     * Gets a Firebase reference to the Query's location.
     */
    ref(): Firebase;
}

interface Firebase extends FirebaseQuery {
    /**
     * @deprecated Use authWithCustomToken() instead.
     * Authenticates a Firebase client using the provided authentication token or Firebase Secret.
     */
    auth(authToken: string, onComplete?: (error: any, result: FirebaseAuthResult) => void, onCancel?:(error: any) => void): void;
    /**
     * Authenticates a Firebase client using an authentication token or Firebase Secret.
     */
    authWithCustomToken(autoToken: string, onComplete: (error: any, authData: FirebaseAuthData) => void, options?:Object): void;
    /**
     * Authenticates a Firebase client using a new, temporary guest account.
     */
    authAnonymously(onComplete: (error: any, authData: FirebaseAuthData) => void, options?: Object): void;
    /**
     * Authenticates a Firebase client using an email / password combination.
     */
    authWithPassword(credentials: FirebaseCredentials, onComplete: (error: any, authData: FirebaseAuthData) => void, options?: Object): void;
    /**
     * Authenticates a Firebase client using a popup-based OAuth flow.
     */
    authWithOAuthPopup(provider: string, onComplete:(error: any, authData: FirebaseAuthData) => void, options?: Object): void;
    /**
     * Authenticates a Firebase client using a redirect-based OAuth flow.
     */
    authWithOAuthRedirect(provider: string, onComplete: (error: any) => void, options?: Object): void;
    /**
     * Authenticates a Firebase client using OAuth access tokens or credentials.
     */
    authWithOAuthToken(provider: string, credentials: string, onComplete: (error: any, authData: FirebaseAuthData) => void, options?: Object): void;
    authWithOAuthToken(provider: string, credentials: Object, onComplete: (error: any, authData: FirebaseAuthData) => void, options?: Object): void;
    /**
     * Synchronously access the current authentication state of the client.
     */
    getAuth(): FirebaseAuthData;
    /**
     * Listen for changes to the client's authentication state.
     */
    onAuth(onComplete: (authData: FirebaseAuthData) => void, context?: Object): void;
    /**
     * Detaches a callback previously attached with onAuth().
     */
    offAuth(onComplete: (authData: FirebaseAuthData) => void, context?: Object): void;
    /**
     * Unauthenticates a Firebase client.
     */
    unauth(): void;
    /**
     * Gets a Firebase reference for the location at the specified relative path.
     */
    child(childPath: string): Firebase;
    /**
     * Gets a Firebase reference to the parent location.
     */
    parent(): Firebase;
    /**
     * Gets a Firebase reference to the root of the Firebase.
     */
    root(): Firebase;
    /**
     * Returns the last token in a Firebase location.
     */
    key(): string;
    /**
     * @deprecated Use key() instead.
     * Returns the last token in a Firebase location.
     */
    name(): string;
    /**
     * Gets the absolute URL corresponding to this Firebase reference's location.
     */
    toString(): string;
    /**
     * Writes data to this Firebase location.
     */
    set(value: any, onComplete?: (error: any) => void): void;
    /**
     * Writes the enumerated children to this Firebase location.
     */
    update(value: Object, onComplete?: (error: any) => void): void;
    /**
     * Removes the data at this Firebase location.
     */
    remove(onComplete?: (error: any) => void): void;
    /**
     * Generates a new child location using a unique name and returns a Firebase reference to it.
     * @returns {Firebase} A Firebase reference for the generated location.
     */
    push(value?: any, onComplete?: (error: any) => void): Firebase;
    /**
     * Writes data to this Firebase location. Like set() but also specifies the priority for that data.
     */
    setWithPriority(value: any, priority: string, onComplete?: (error: any) => void): void;
    setWithPriority(value: any, priority: number, onComplete?: (error: any) => void): void;
    /**
     * Sets a priority for the data at this Firebase location.
     */
    setPriority(priority: string, onComplete?: (error: any) => void): void;
    setPriority(priority: number, onComplete?: (error: any) => void): void;
    /**
     * Atomically modifies the data at this location.
     */
    transaction(updateFunction: (currentData: any)=> any, onComplete?: (error: any, committed: boolean, snapshot: FirebaseDataSnapshot) => void, applyLocally?: boolean): void;
    /**
     * Creates a new user account using an email / password combination.
     */
    createUser(credentials: FirebaseCredentials, onComplete: (error: any) => void): void;
    /**
     * Change the password of an existing user using an email / password combination.
     */
    changePassword(credentials: { email: string; oldPassword: string; newPassword: string }, onComplete: (error: any) => void): void;
    /**
     * Removes an existing user account using an email / password combination.
     */
    removeUser(credentials: FirebaseCredentials, onComplete: (error: any) => void): void;
    /**
     * Sends a password-reset email to the owner of the account, containing a token that may be used to authenticate and change the user password.
     */
    resetPassword(credentials: { email: string }, onComplete: (error: any) => void): void;
    onDisconnect(): FirebaseOnDisconnect;
}
interface FirebaseStatic {
    /**
     * Constructs a new Firebase reference from a full Firebase URL.
     */
    new (firebaseURL: string): Firebase;
    /**
     * Manually disconnects the Firebase client from the server and disables automatic reconnection.
     */
    goOffline(): void;
    /**
     * Manually reestablishes a connection to the Firebase server and enables automatic reconnection.
     */
    goOnline(): void;

    ServerValue: {
        /**
         * A placeholder value for auto-populating the current timestamp 
         * (time since the Unix epoch, in milliseconds) by the Firebase servers.
         */
        TIMESTAMP: any;
    };
}
declare var Firebase: FirebaseStatic;

// Reference: https://www.firebase.com/docs/web/api/firebase/getauth.html
interface FirebaseAuthData {
    uid: string;
    provider: string;
    token: string;
    expires: number;
    auth: Object;
}

interface FirebaseCredentials {
    email: string;
    password: string;
}