time.ts

/**
 * Converts a timestamp into a human-readable "time since" string
 * @param timestamp - Date string or Date object
 * @returns Human-readable duration string
 */
export function getTimeSince(timestamp: string | Date): string {
    const date =
        typeof timestamp === "string" ? new Date(timestamp) : timestamp;
    const now = new Date();
    const diffMs = now.getTime() - date.getTime();
    const diffSecs = Math.floor(diffMs / 1000);
    const diffMins = Math.floor(diffSecs / 60);
    const diffHours = Math.floor(diffMins / 60);
    const diffDays = Math.floor(diffHours / 24);

    // Less than 1 minute
    if (diffMins < 1) {
        return `${diffSecs} second${diffSecs !== 1 ? "s" : ""} ago`;
    }

    // Less than 1 hour
    if (diffHours < 1) {
        return `${diffMins} minute${diffMins !== 1 ? "s" : ""} ago`;
    }

    // Less than 24 hours
    if (diffDays < 1) {
        if (diffMins % 60 === 0) {
            // Exact hours
            return `${diffHours} hour${diffHours !== 1 ? "s" : ""} ago`;
        } else {
            // Hours and minutes
            const remainingMins = diffMins % 60;
            return `${diffHours} hour${diffHours !== 1 ? "s" : ""} and ${remainingMins} minute${remainingMins !== 1 ? "s" : ""} ago`;
        }
    }

    // More than 24 hours
    return `${diffDays} day${diffDays !== 1 ? "s" : ""} ago`;
}

/**
 * Formats a timestamp into a human-readable format: DD-MM-YYYY HH:MM(am/pm)
 * @param timestamp - Date string or Date object
 * @returns Formatted date string
 */
export function humanizeTimestamp(timestamp: string | Date): string {
    const date =
        typeof timestamp === "string" ? new Date(timestamp) : timestamp;

    // Get day, month, year
    const day = date.getDate().toString().padStart(2, "0");
    const month = (date.getMonth() + 1).toString().padStart(2, "0"); // getMonth() is 0-based
    const year = date.getFullYear();

    // Get hours in 12-hour format
    let hours = date.getHours();
    const ampm = hours >= 12 ? "pm" : "am";
    hours = hours % 12;
    hours = hours ? hours : 12; // Convert 0 to 12

    // Get minutes
    const minutes = date.getMinutes().toString().padStart(2, "0");

    return `${year}-${month}-${day} ${hours}:${minutes}${ampm}`;
}

/**
 * Formats a timestamp into a human-readable "casual" date string.
 * @param timestamp - string timestamp
 * @returns Formatted date string
 */
export const humanizeTimestampCasual = (date: string): string => {
    const dateObject = new Date(date);
    const options: Intl.DateTimeFormatOptions = {
        year: "numeric",
        month: "short",
        day: "numeric",
        hour: "numeric",
        minute: "numeric",
    };
    return dateObject.toLocaleDateString("en-GB", options);
};