// Type definitions for koa-generic-session 1.x
// Project: https://github.com/koajs/generic-session
// Definitions by: Nick Simmons <https://github.com/nsimmons>, Ragg <https://github.com/Ragg->
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.3

import * as Koa from "koa";

declare namespace koaSession {
    interface Session {
        cookie: any;
        [key: string]: any;
    }

    interface SessionIdStore {
        get(): any;
        set(sid: string, session: Session): void;
        reset(): void;
    }

    interface SessionStore {
        (): SessionStore;
        get(sid: string): any;
        set(sid: string, session: Session, ttl: number): void;
        destroy(sid: string): void;
    }

    interface SessionOptions {
        key?: string;
        store?: SessionStore;
        ttl?: number;
        prefix?: string;
        cookie?: {
            path?: string;
            rewrite?: boolean;
            signed?: boolean;
            maxAge?: number;
            secure?: boolean;
            httpOnly?: boolean;
        };
        allowEmpty?: boolean;
        defer?: boolean;
        reconnectTimeout?: number;
        rolling?: boolean;
        sessionIdStore?: SessionIdStore;
        genSid?(length: number): string;
        errorHandler?(error: Error, type: string, ctx: Koa.Context): void;
        valid?(ctx: Koa.Context, session: Session): boolean;
        beforeSave?(ctx: Koa.Context, session: Session): void;
    }

    const MemoryStore: SessionStore;
}

declare module 'koa' {
    interface Context {
        session: koaSession.Session|null;
        sessionSave: boolean|null;
        regenerateSession(): Generator;
    }
}

declare function koaSession(options: koaSession.SessionOptions): Koa.Middleware;
export = koaSession;