Get Authors dates frame.

commit_time_range_all_authors

#!/bin/bash

# Ensure we're inside a git repository
if ! git rev-parse --is-inside-work-tree > /dev/null 2>&1; then
  echo "Error: This is not a git repository."
  exit 1
fi

TMP_FILE=$(mktemp)

# Get unique list of authors (name + email)
git log --format="%an|%ae" | sort -u | while IFS="|" read NAME EMAIL
do
    FIRST_COMMIT=$(git log --author="$EMAIL" --reverse --format="%at" | head -n 1)
    LAST_COMMIT=$(git log --author="$EMAIL" --format="%at" | head -n 1)

    if [ -z "$FIRST_COMMIT" ]; then
        continue
    fi

    DIFF_SECONDS=$((LAST_COMMIT - FIRST_COMMIT))
    DIFF_DAYS=$((DIFF_SECONDS / 86400))
    DIFF_HOURS=$(( (DIFF_SECONDS % 86400) / 3600 ))
    DIFF_MINUTES=$(( (DIFF_SECONDS % 3600) / 60 ))

    TOTAL_COMMITS=$(git log --author="$EMAIL" --oneline | wc -l)

    # Guardamos todo en el tmp con FIRST_COMMIT como clave de ordenación
    echo "$FIRST_COMMIT|$NAME|$EMAIL|$LAST_COMMIT|$DIFF_DAYS|$DIFF_HOURS|$DIFF_MINUTES" >> "$TMP_FILE"

done

# Ordenamos por el timestamp del primer commit
sort -n "$TMP_FILE" | while IFS="|" read FIRST NAME EMAIL LAST DIFF_DAYS DIFF_HOURS DIFF_MINUTES
do
    FIRST_DATE=$(date -r "$FIRST")
    LAST_DATE=$(date -r "$LAST")

    echo "Author: $NAME <$EMAIL>, $FIRST_DATE - $LAST_DATE, $DIFF_DAYS days, $DIFF_HOURS hours, $DIFF_MINUTES minutes"
done

rm "$TMP_FILE"