/**
 * Created by jimsugg on 9/18/16.
 */

import { DmSignState } from '../baDmInterfaces'
import { DmInternal } from "../baDmClasses";
import { BaDmId, BaDmIdNone, VideoMode, VideoModeName } from '../baDmDataTypes';
import { SignAction, SignParams } from '../baDmActions'
import { NEW_SIGN, OPEN_SIGN } from "../baDmActions";

// The present implementation assumes that the state holds only one sign
//  at a time. Conceivably, the data model could hold multiple signs.
//  For such a case, container reducers (such as those for zones) would
//  be required, and zones would have container properties to identify their
//  containing sign.

type DmState = DmInternal.DmState;

// Return a simple object conforming to DmSignState
const createSignState =
    (id: BaDmId, name: string, videoMode: VideoMode) =>
        ({
            id: BaDmIdNone,      // not needed unless we support multiple signs
            name: name,
            videoMode: videoMode
        });

const newSignState = createSignState(BaDmIdNone, "Untitled", VideoMode.v1920x1080x60p);

const signReducer = (state: DmSignState = newSignState, {type, id, payload}: SignAction) => {
    switch (type) {
        case NEW_SIGN:
            let {name, videoMode} = payload;
            return createSignState(id, name, videoMode);
    }
    return state;
};

// Selectors

export const getSignMetadata = (state: DmState) => new DmInternal.Sign(state.sign);
export const getSignName = (state: DmState) => state.sign.name;
export const getSignVideoMode = (state: DmState) => state.sign.videoMode;
export const getSignVideoModeName = (state: DmState) => VideoModeName[state.sign.videoMode];

export default signReducer;