#!/usr/bin/env bash

set -e

# Ensure $HOME exists
if [ -z "$HOME" ]; then
	echo "❌ HOME variable not set!"
	exit 1
fi

# Ensure jq is installed
if ! command -v jq &>/dev/null; then
	echo "❌ Error: jq is required but not installed."
	exit 1
fi

# ──────────────── Functions ────────────────

fetch_repos() {
	local author="$1"
	local page=1

	while :; do
		response=$(curl -s "https://api.github.com/users/$author/repos?per_page=100&page=$page")
		if [ "$(echo "$response" | jq length)" -eq 0 ]; then
			break
		fi
		echo "$response" | jq -r '.[].name'
		page=$((page + 1))
	done
}

clone_repo() {
	local repo="$1"
	local clone_url
	local repo_dir="$HOME/GitHub/$AUTHOR/$repo"

	if [ "$METHOD" = "SSH" ]; then
		clone_url="git@github.com:$AUTHOR/$repo.git"
	else
		clone_url="https://github.com/$AUTHOR/$repo.git"
	fi

	if [ -e "$repo_dir" ]; then
		echo "⚠️  Skipping existing: $AUTHOR/$repo"
		return
	fi

	(
		output=$(
			{
				echo "================ ℹ️  Cloning $repo ℹ️  ================"
				git clone "$clone_url" "$repo_dir/"
				echo "================ ✅ Cloned $repo ✅ ==================="
			} 2>&1
		)
		echo "$output"
	) &
}

# ──────────────── Argument Parsing ────────────────
if [ "$#" -gt 3 ]; then
	echo "ℹ️  Usage: $0 [SSH/HTTPS] [Author] [Repository]"
	exit 1
fi

echo "ℹ️  Inputs:"

case "$#" in
3)
	METHOD="$1"
	AUTHOR="$2"
	REPO="$3"
	echo "   Method: $METHOD"
	echo "   Author: $AUTHOR"
	echo "   Repo:   ${REPO:-ALL}"
	;;
2)
	METHOD="$1"
	AUTHOR="$2"
	echo "   Method: $METHOD"
	echo "   Author: $AUTHOR"
	read -rp "   Repo:   ALL (leave empty to clone all): " REPO
	;;
1)
	METHOD="$1"
	echo "   Method: $METHOD"
	read -rp "   Author: " AUTHOR
	read -rp "   Repo:   ALL (leave empty to clone all): " REPO
	;;
0)
	read -rp "   Method: " METHOD
	read -rp "   Author: " AUTHOR
	read -rp "   Repo:   ALL (leave empty to clone all): " REPO
	;;
esac

METHOD="${METHOD,,}"
if [ "$METHOD" = "ssh" ]; then
	METHOD="SSH"
else
	METHOD="HTTPS"
fi

echo

# ──────────────── Main Logic ────────────────
if [ -z "$REPO" ] || [ "${REPO^^}" = "ALL" ]; then
	echo "ℹ️  Fetching all repositories for '$AUTHOR'..."
	mapfile -t repos < <(fetch_repos "$AUTHOR")

	if [ "${#repos[@]}" -eq 0 ]; then
		echo "❌ No repositories found."
		exit 1
	fi

	echo "Found ${#repos[@]} repositories."
	echo

	for repo in "${repos[@]}"; do
		clone_repo "$repo"
	done

	wait
else
	clone_repo "$REPO"
	wait
fi