git-https-to-ssh

#!/bin/bash
#
# Converts all git remotes from HTTPS to SSH in repositories under a directory.
# Usage:
#   git-https-to-ssh [--dry-run|-n] [directory]
#
# Default directory: ~/dev

set -eu

dry_run=false
dir=""

for arg in "$@"; do
    case "$arg" in
        --dry-run|-n)
            dry_run=true
            ;;
        *)
            dir="$arg"
            ;;
    esac
done

dir="${dir:-$HOME/dev}"

if [[ ! -d "$dir" ]]; then
    echo "Error: Directory '$dir' does not exist" >&2
    exit 1
fi

if ! command -v gh >/dev/null 2>&1; then
    echo "Error: gh CLI not found. Install from https://cli.github.com/" >&2
    exit 1
fi

echo "Scanning for git repositories in $dir..."
$dry_run && echo "(Dry run - no changes will be made)"

find "$dir" -name .git -type d 2>/dev/null | while read -r gitdir; do
    repo="${gitdir%/.git}"

    git -C "$repo" remote -v 2>/dev/null | grep ' (fetch)$' | while read -r name url _; do
        if [[ "$url" =~ ^https://github\.com/ ]]; then
            new_url=$(gh repo view "$url" --json sshUrl -q '.sshUrl' 2>/dev/null) || continue
            [[ -z "$new_url" ]] && continue

            echo "Converting: $repo"
            echo "  $name: $url -> $new_url"

            if ! $dry_run; then
                git -C "$repo" remote set-url "$name" "$new_url"
            fi
        fi
    done
done

echo "Done."
$dry_run && echo "(Dry run: no actual changes performed)"