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import * as actions from '../actions';
import Completions from "../Completions";
export interface State {
mode: string;
messageText: string;
consoleText: string;
completionSource: string;
completions: Completions;
select: number;
viewIndex: number;
}
const defaultState = {
mode: '',
messageText: '',
consoleText: '',
completionSource: '',
completions: [],
select: -1,
viewIndex: 0,
};
const nextSelection = (state: State): number => {
if (state.completions.length === 0) {
return -1;
}
if (state.select < 0) {
return 0;
}
const length = state.completions
.map(g => g.items.length)
.reduce((x, y) => x + y);
if (state.select + 1 < length) {
return state.select + 1;
}
return -1;
};
const prevSelection = (state: State): number => {
const length = state.completions
.map(g => g.items.length)
.reduce((x, y) => x + y);
if (state.select < 0) {
return length - 1;
}
return state.select - 1;
};
const nextConsoleText = (completions: any[], select: number, defaults: any) => {
if (select < 0) {
return defaults;
}
const items = completions.map(g => g.items).reduce((g1, g2) => g1.concat(g2));
return items[select].content;
};
// eslint-disable-next-line max-lines-per-function
export default function reducer(
state: State = defaultState,
action: actions.ConsoleAction,
): State {
switch (action.type) {
case actions.CONSOLE_HIDE:
return { ...state,
mode: '', };
case actions.CONSOLE_SHOW_COMMAND:
return { ...state,
mode: 'command',
consoleText: action.text,
completions: []};
case actions.CONSOLE_SHOW_FIND:
return { ...state,
mode: 'find',
consoleText: '',
completions: []};
case actions.CONSOLE_SHOW_ERROR:
return { ...state,
mode: 'error',
messageText: action.text, };
case actions.CONSOLE_SHOW_INFO:
return { ...state,
mode: 'info',
messageText: action.text, };
case actions.CONSOLE_HIDE_COMMAND:
return {
...state,
mode: state.mode === 'command' || state.mode === 'find' ? '' : state.mode,
};
case actions.CONSOLE_SET_CONSOLE_TEXT:
return { ...state,
consoleText: action.consoleText, };
case actions.CONSOLE_SET_COMPLETIONS:
return { ...state,
completions: action.completions,
completionSource: action.completionSource,
select: -1 };
case actions.CONSOLE_COMPLETION_NEXT: {
const select = nextSelection(state);
return { ...state,
select: select,
consoleText: nextConsoleText(
state.completions, select, state.completionSource) };
}
case actions.CONSOLE_COMPLETION_PREV: {
const select = prevSelection(state);
return { ...state,
select: select,
consoleText: nextConsoleText(
state.completions, select, state.completionSource) };
}
default:
return state;
}
}
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