/
get-instruction.js
74 lines (73 loc) · 1.25 KB
/
get-instruction.js
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const getBestIndex = ( str, words )=>{
let best = Infinity;
words.forEach( w=>{
const index = str.indexOf( w );
if( index >= 0 ){
best = Math.min( best, index );
}
});
if( best === Infinity ){
return -1;
}else{
return best;
}
};
module.exports = ( text )=>{
text = text.toLowerCase();
const indices = {
"↑" : getBestIndex(
text,
[
"forward",
"↑",
"up",
"charge",
"advance",
"proceed",
"straight",
"yolo"
]
),
"↓" : getBestIndex(
text,
[
"backward",
"↓",
"down",
"retreat",
"reverse",
"back",
]
),
"←" : getBestIndex(
text,
[
"left",
"←",
"port",
"counter-clockwise",
"widdershins",
"democrat"
]
),
"→" : getBestIndex(
text,
[
"right",
"→",
"starboard",
"clockwise",
"counter-widdershins",
"republican",
"gop"
]
),
};
return Object
.keys( indices )
.filter( a=>(indices[a] >= 0) )
.sort(( a, b )=>{
return indices[a] - indices[b]
})
[0];
};