ng-time-past-pipe
Version:
Reactive textual representation of the time that has been passed between a given date and now in your Angular App.
123 lines • 12.7 kB
JavaScript
import { inject, InjectFlags, InjectionToken } from '@angular/core';
/**
* Custom `TimeDiffGenerator` Injection Token
*
* @public
* @api
*/
export const CUSTOM_TIME_DIFF_GENERATOR = new InjectionToken('Custom Time Diff Generator');
/**
* Return a respective textual representation of the input, as the input is a timespan that has been passed.
*
* @param diff The time diff object
* @public
* @api
*/
export const defaultTimeDiffGenerator = (diff) => {
if (diff.seconds === 0) {
return 'about now';
}
return diff.isFuture ? getFutureDiffString(diff) : getPastDiffString(diff);
};
export const getPastDiffString = (diff) => {
const { seconds, minutes, hours, months, days, years } = diff;
if (seconds <= 5) {
return 'a few seconds ago';
}
else if (seconds <= 59) {
return seconds + ' seconds ago';
}
else if (seconds <= 90) {
return 'about a minute ago';
}
if (minutes <= 45) {
return minutes + ' minutes ago';
}
else if (minutes <= 90) {
return 'one hour ago';
}
if (hours <= 22) {
return hours + ' hours ago';
}
else if (hours <= 36) {
return 'a day ago';
}
if (days <= 25) {
return days + ' days ago';
}
else if (days <= 45) {
return 'a month ago';
}
if (days <= 345) {
return months + ' months ago';
}
else if (days <= 545) {
return 'a year ago';
}
return years + ' years ago';
};
export const getFutureDiffString = (diff) => {
const { seconds, minutes, hours, months, days, years } = diff;
if (seconds <= 59) {
return 'in ' + seconds + ' seconds';
}
if (seconds <= 90) {
return 'in one minute';
}
else if (minutes <= 59) {
return 'in ' + minutes + ' minutes';
}
if (minutes <= 90) {
return 'in one hour';
}
else if (hours <= 22) {
return 'in ' + hours + ' hours';
}
if (hours <= 36) {
return 'in one day';
}
else if (days <= 25) {
return 'in ' + days + ' days';
}
if (days <= 45) {
return 'in one month';
}
else if (days <= 345) {
return 'in ' + months + ' months';
}
if (days <= 545) {
return 'in one year';
}
return 'in ' + years + ' years';
};
/**
* Provides the TimeDiffGenerator preferring a custom provider for internal usage
*
* @internal
*/
export const TIME_DIFF_GENERATOR = new InjectionToken('Time Diff Generator', {
factory: () => {
const customGenerator = inject(CUSTOM_TIME_DIFF_GENERATOR, InjectFlags.Optional);
return customGenerator ?? defaultTimeDiffGenerator;
},
});
/**
* TimeDiff Factory
*
* @param seconds The time difference in seconds. Negative values are considered as a future event
* @internal
*/
export const createTimeDiff = (seconds) => {
const isFuture = seconds < 0;
if (isFuture) {
seconds = Math.abs(seconds);
}
const diff = { seconds, isFuture };
diff.minutes = Math.round(seconds / 60);
diff.hours = Math.round(diff.minutes / 60);
diff.days = Math.round(diff.hours / 24);
diff.months = Math.round(diff.days / 30.416);
diff.years = Math.round(diff.days / 365);
return diff;
};
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getFutureDiffString(diff) : getPastDiffString(diff);\n};\n\nexport const getPastDiffString = (diff: TimeDiff) => {\n  const { seconds, minutes, hours, months, days, years } = diff;\n\n  if (seconds <= 5) {\n    return 'a few seconds ago';\n  } else if (seconds <= 59) {\n    return seconds + ' seconds ago';\n  } else if (seconds <= 90) {\n    return 'about a minute ago';\n  }\n\n  if (minutes <= 45) {\n    return minutes + ' minutes ago';\n  } else if (minutes <= 90) {\n    return 'one hour ago';\n  }\n\n  if (hours <= 22) {\n    return hours + ' hours ago';\n  } else if (hours <= 36) {\n    return 'a day ago';\n  }\n\n  if (days <= 25) {\n    return days + ' days ago';\n  } else if (days <= 45) {\n    return 'a month ago';\n  }\n\n  if (days <= 345) {\n    return months + ' months ago';\n  } else if (days <= 545) {\n    return 'a year ago';\n  }\n\n  return years + ' years ago';\n};\n\nexport const getFutureDiffString = (diff: TimeDiff): string => {\n  const { seconds, minutes, hours, months, days, years } = diff;\n\n  if (seconds <= 59) {\n    return 'in ' + seconds + ' seconds';\n  }\n\n  if (seconds <= 90) {\n    return 'in one minute';\n  } else if (minutes <= 59) {\n    return 'in ' + minutes + ' minutes';\n  }\n\n  if (minutes <= 90) {\n    return 'in one hour';\n  } else if (hours <= 22) {\n    return 'in ' + hours + ' hours';\n  }\n\n  if (hours <= 36) {\n    return 'in one day';\n  } else if (days <= 25) {\n    return 'in ' + days + ' days';\n  }\n\n  if (days <= 45) {\n    return 'in one month';\n  } else if (days <= 345) {\n    return 'in ' + months + ' months';\n  }\n\n  if (days <= 545) {\n    return 'in one year';\n  }\n\n  return 'in ' + years + ' years';\n};\n\n/**\n * Provides the TimeDiffGenerator preferring a custom provider for internal usage\n *\n * @internal\n */\nexport const TIME_DIFF_GENERATOR = new InjectionToken<TimeDiffGenerator>(\n  'Time Diff Generator',\n  {\n    factory: () => {\n      const customGenerator = inject(\n        CUSTOM_TIME_DIFF_GENERATOR,\n        InjectFlags.Optional\n      );\n      return customGenerator ?? defaultTimeDiffGenerator;\n    },\n  }\n);\n\n/**\n * TimeDiff Factory\n *\n * @param seconds The time difference in seconds. Negative values are considered as a future event\n * @internal\n */\nexport const createTimeDiff = (seconds: number): TimeDiff => {\n  const isFuture = seconds < 0;\n\n  if (isFuture) {\n    seconds = Math.abs(seconds);\n  }\n\n  const diff: Partial<TimeDiff> = { seconds, isFuture };\n\n  diff.minutes = Math.round(seconds / 60);\n  diff.hours = Math.round(diff.minutes / 60);\n  diff.days = Math.round(diff.hours / 24);\n  diff.months = Math.round(diff.days / 30.416);\n  diff.years = Math.round(diff.days / 365);\n\n  return diff as TimeDiff;\n};\n"]}