Types.ts

/* eslint-disable no-unused-vars */
export const PROTOCOL_NAME = "WEBRTSP";

export const Protocol = {
    WEBRTSP_0_2: PROTOCOL_NAME + "/0.2",
} as const;
export type Protocol = typeof Protocol[keyof typeof Protocol];

const DEFAULT_PROTOCOL = Protocol.WEBRTSP_0_2;

export const Method = {
    OPTIONS: "OPTIONS",
    LIST: "LIST",
    DESCRIBE: "DESCRIBE",
    SETUP: "SETUP",
    PLAY: "PLAY",
    SUBSCRIBE: "SUBSCRIBE",
    RECORD: "RECORD",
    TEARDOWN: "TEARDOWN",
    GET_PARAMETER: "GET_PARAMETER",
    SET_PARAMETER: "SET_PARAMETER",
} as const;
export type Method = typeof Method[keyof typeof Method];

export const ContentType = {
    TEXT_PARAMETERS: "text/parameters",
    APPLICATION_SDP: "application/sdp",
    APPLICATION_ICE_CANDIDATE: "application/x-ice-candidate",
} as const;

export const StatusCode = {
    OK: 200,
} as const;

export const ReasonPhrase = {
    OK: "OK",
} as const;

export type CSeq = number

export class HeaderFields extends Map<string, string> {}

export class Options extends Set<Method> {}

export class Parameters extends Map<string, string> {}

export class URI2Description extends Map<string, string> {} // uri -> description

export class Request {
    readonly method: Method;
    readonly uri: string;
    readonly protocol: Protocol = DEFAULT_PROTOCOL;
    readonly cseq: CSeq;
    readonly session?: string;

    headerFields = new HeaderFields();

    body: string = "";

    constructor(method: Method, uri: string, cseq: CSeq, session?: string) {
        this.method = method;
        this.uri = uri;
        this.cseq = cseq;
        if(session)
            this.session = session;
    }

    get contentType(): string | undefined {
        return this.headerFields.get("content-type");
    }

    set contentType(contentType: string) {
        this.headerFields.set("content-type", contentType);
    }
}

export class Response {
    readonly protocol: Protocol = DEFAULT_PROTOCOL;
    readonly statusCode: number;
    readonly reasonPhrase: string;
    readonly cseq: CSeq;
    readonly session?: string;

    headerFields = new HeaderFields();

    body: string = "";

    constructor(
        statusCode: number,
        reasonPhrase: string,
        cseq: CSeq,
        session: string | undefined
    ) {
        this.statusCode = statusCode;
        this.reasonPhrase = reasonPhrase;
        this.cseq = cseq;
        this.session = session;
    }

    get contentType(): string | undefined {
        return this.headerFields.get("content-type");
    }

    set contentType(contentType: string) {
        this.headerFields.set("content-type", contentType);
    }
}