| 1 | /** |
| 2 | * Parse timestamp into seconds |
| 3 | * |
| 4 | * Accepts: |
| 5 | * - 10:50.1 |
| 6 | * - 10s |
| 7 | * - 5m |
| 8 | * - 3min |
| 9 | * - 3mins 5secs |
| 10 | * - 10.5m3s |
| 11 | * - +10s |
| 12 | * - 1h10m30s |
| 13 | * - 1h4s |
| 14 | * - 1:1:1 |
| 15 | */ |
| 16 | const RE_ALPHA = /[a-z]/i |
| 17 | |
| 18 | export function parseTimeString(timestamp: string | number): { |
| 19 | seconds: number |
| 20 | relative: boolean |
| 21 | } { |
| 22 | if (typeof timestamp === 'number') { |
| 23 | return { |
| 24 | seconds: timestamp, |
| 25 | relative: false, |
| 26 | } |
| 27 | } |
| 28 | |
| 29 | const relative = timestamp.startsWith('+') |
| 30 | if (relative) { |
| 31 | timestamp = timestamp.slice(1) |
| 32 | } |
| 33 | let seconds = 0 |
| 34 | if (timestamp.includes(':')) { |
| 35 | const parts = timestamp.split(':').map(Number) |
| 36 | let h = 0 |
| 37 | let m = 0 |
| 38 | let s = 0 |
| 39 | if (parts.length === 3) { |
| 40 | h = parts[0] |
| 41 | m = parts[1] |
| 42 | s = parts[2] |
| 43 | } |
| 44 | else if (parts.length === 2) { |
| 45 | m = parts[0] |
| 46 | s = parts[1] |
| 47 | } |
| 48 | else if (parts.length === 1) { |
| 49 | s = parts[0] |
| 50 | } |
| 51 | else { |
| 52 | throw new TypeError('Invalid timestamp format') |
| 53 | } |
| 54 | if (Number.isNaN(h) || Number.isNaN(m) || Number.isNaN(s)) { |
| 55 | throw new TypeError('Invalid timestamp format') |
| 56 | } |
| 57 | seconds = (h || 0) * 3600 + (m || 0) * 60 + (s || 0) |
| 58 | } |
| 59 | else if (!RE_ALPHA.test(timestamp)) { |
| 60 | seconds = Number(timestamp) |
| 61 | if (Number.isNaN(seconds)) { |
| 62 | throw new TypeError('Invalid timestamp format') |
| 63 | } |
| 64 | } |
| 65 | else { |
| 66 | const unitMap: Record<string, number> = { |
| 67 | s: 1, |
| 68 | sec: 1, |
| 69 | secs: 1, |
| 70 | m: 60, |
| 71 | min: 60, |
| 72 | mins: 60, |
| 73 | h: 3600, |
| 74 | hr: 3600, |
| 75 | hrs: 3600, |
| 76 | hour: 3600, |
| 77 | hours: 3600, |
| 78 | day: 86400, |
| 79 | days: 86400, |
| 80 | week: 604800, |
| 81 | weeks: 604800, |
| 82 | month: 2629746, |
| 83 | months: 2629746, |
| 84 | year: 31556952, |
| 85 | years: 31556952, |
| 86 | } |
| 87 | const regex = /([\d.]+)([a-z]+)/gi |
| 88 | const matches = timestamp.matchAll(regex) |
| 89 | if (matches) { |
| 90 | for (const match of matches) { |
| 91 | const value = Number(match[1]) |
| 92 | if (Number.isNaN(value)) { |
| 93 | throw new TypeError(`Invalid timestamp value: ${match[1]}`) |
| 94 | } |
| 95 | const unit = match[2].toLowerCase() |
| 96 | if (!(unit in unitMap)) { |
| 97 | throw new TypeError(`Invalid timestamp unit: ${unit}`) |
| 98 | } |
| 99 | seconds += value * unitMap[unit] |
| 100 | } |
| 101 | } |
| 102 | const remaining = timestamp.replace(regex, '').trim() |
| 103 | if (remaining) { |
| 104 | throw new TypeError(`Unknown timestamp remaining: ${remaining}`) |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | return { |
| 109 | seconds, |
| 110 | relative, |
| 111 | } |
| 112 | } |
| 113 |