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const rl = require('readline');
const list_mock = [
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'10',
'11',
'12',
'13',
'14',
'15',
'16',
'17',
'18',
'19',
'20',
'21',
'22',
'23',
'24',
'25',
'26',
'27',
'28',
'29',
'30',
'31',
'32',
'33',
'34',
'35',
'36',
'37',
'38',
'39',
'40',
'41',
'42',
'43',
'44',
'45',
'46',
'47',
'48',
'49',
'50'
]
let active = 0; scroll = 0; draw = { t: 'p', v: ['Loading Notes App...'] }, appTitle = '', menu = ''
const pr = t => process.stdout.write(t)
const cls = () => console.clear()
const cursor = {
hide: () => pr('\u001B[?25l'),
show: () => pr('\u001B[?25h')
}
// =========== DRAW APP =============
const drawApp = () => {
const lines = process.stdout.rows
const columns = process.stdout.columns
// process.stdout.write('\x1Bc')
cls()
for (var i = 0; i < lines - 1; i++) {
const dist = t => [Math.floor((columns - t) / 2), Math.ceil((columns - t) / 2) - 2]
switch(i){
case 0:
pr('╔'+'═'.repeat(columns - 2)+'╗')
break
case 1:
pr('║'+' '.repeat(dist(appTitle.length)[0])+appTitle+' '.repeat(dist(appTitle.length)[1])+'║')
break
case 2:
pr('╠'+'═'.repeat(columns - 2) +'╣')
break
case lines - 3:
pr('╟'+'─'.repeat(columns - 2) +'╢')
break
case lines - 2:
pr('║'+' '+menu.substring(0,columns-4)+' '.repeat(columns-menu.length-3)+'║')
break
default:
const max = Math.max(...(draw.v.map(el => el.length)))
if (draw.t === 'p') {
if (i === (Math.floor((lines - draw.v.length) / 2) - 2)){
pr('║'+' '.repeat(dist(max+4)[0])+'┌'+'─'.repeat(max+2)+'┐'+' '.repeat(dist(max+4)[1])+'║')
} else if (i === (Math.floor((lines + draw.v.length) / 2) + 1)) {
pr('║'+' '.repeat(dist(max+4)[0])+'└'+'─'.repeat(max+2)+'┘'+' '.repeat(dist(max+4)[1])+'║')
} else if (i === (Math.floor((lines - draw.v.length) / 2) - 1) || i === (Math.floor((lines + draw.v.length) / 2))) {
pr('║'+' '.repeat(dist(max+4)[0])+'│'+' '.repeat(max+2)+'│'+' '.repeat(dist(max+4)[1])+'║')
} else if (i < (Math.floor((lines - draw.v.length) / 2) - 1) || (i > (Math.floor((lines + draw.v.length) / 2)))) {
pr('║'+' '.repeat(columns - 2)+'║')
} else {
const n = i - (Math.floor((lines - draw.v.length) / 2))
const t = draw.v[n]
const s = [Math.floor((max+2-t.length) / 2), Math.ceil((max+2-t.length) / 2)]
pr('║'+' '.repeat(dist(max+4)[0])+'│'+' '.repeat(s[0])+t+' '.repeat(s[1])+'│'+' '.repeat(dist(max+4)[1])+'║')
}
} else if (draw.t === 'l') {
const l = draw.v[i-3+scroll] && draw.v[i-3+scroll].substring(0,columns-4)
pr(l
? ('║'+(active===i-3+scroll?'\x1b[7m ':' ')+l+' '.repeat(columns-l.length-3)+'\x1b[0m║')
: ('║'+' '.repeat(columns - 2)+'║')
)
}
}
}
pr('╚'+'═'.repeat(columns - 2)+'╝')
}
// ============ GET KEY =================
const getKey = () => {
rl.emitKeypressEvents(process.stdin);
process.stdin.setRawMode(true);
process.stdin.on('keypress', (_, key) => {
const lines = process.stdout.rows
switch(key.name) {
case 'up':
case 'k':
active > 0 && active--
active < scroll && scroll--
drawApp()
break
case 'down':
case 'j':
if (draw.t === 'l') {
active < draw.v.length - 1 && active++
active - scroll > lines - 7 && scroll++
drawApp()
}
break
case 'return':
case 'o':
// draw = { t: 'p', v: ['popup test'] }
// draw = { t: 'p', v: ['popup test', 'aaaaaaa'] }
draw = { t: 'p', v: ['popup test', '', `This will display note nr ${active + 1}.`] }
drawApp()
// process.stdout.write(draw.v[active]);
break
case 'q':
cursor.show()
console.clear()
pr('Bye!\n\n')
process.exit()
default:
}
})
}
// ============ EXECUTION ================
cls()
cursor.hide()
process.stdout.on('resize', drawApp);
appTitle = "Notes App"
menu = '[Q]uit [↓/j] Down [↑/k] Up [Enter/o] Open'
draw = { t: 'l', v: list_mock }
drawApp()
getKey()
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