#!/bin/bash

#
# Initialize dadi staging folder from repository
#
# - delete existing dadi staging folder
#

HTML_HOME="/html"
BRANCHES_FOLDER="/html/branches"
DADI_STAGING_REPOSITORY="git_dadi-staging:AG-IT/KlDaDiSeite.git"

MAX_RETRY_ATTEMPTS=${INIT_RETRY_ATTEMPTS:--1}
RETRY_DELAY=${INIT_RETRY_DELAY:-2}

#
# Funktion: Warte bis Git-Repository erreichbar ist
#
wait_for_git_repository() {
	local attempt=0
	local unlimited=false

	# Prüfe ob unbegrenzte Retries gewünscht sind
	if [ $MAX_RETRY_ATTEMPTS -lt 0 ]; then
		unlimited=true
		echo "Checking Git repository availability (unlimited retries)..."
	else
		echo "Checking Git repository availability (max $MAX_RETRY_ATTEMPTS attempts)..."
	fi

	while true; do
		if git ls-remote --heads "$DADI_STAGING_REPOSITORY" &>/dev/null; then
			echo "✓ Git repository is reachable!"
			return 0
		fi

		attempt=$((attempt + 1))

		if [ "$unlimited" = true ]; then
			echo "⏳ Waiting for Git repository... (attempt $attempt)"
		else
			echo "⏳ Waiting for Git repository... (attempt $attempt/$MAX_RETRY_ATTEMPTS)"

			# Abbruch bei Erreichen des Limits
			if [ $attempt -ge $MAX_RETRY_ATTEMPTS ]; then
				echo "✗ Error: Could not reach Git repository after $MAX_RETRY_ATTEMPTS attempts"
				return 1
			fi
		fi

		sleep $RETRY_DELAY
	done
}

#
# Warte auf Git-Repository
#
if ! wait_for_git_repository; then
	echo "Initialization failed. Service will continue but branches won't be initialized."
	echo "You may need to manually trigger initialization or restart the service."
	exit 1
fi

#
# Remove all branch folders
#

for dir in "$BRANCHES_FOLDER"/*/; do
	dir_name=$(basename "$dir")
	echo "Deleting directory: $dir"
	rm -rf "$dir"
done

#
# Fetch all branch names
#
branches=()
while read -r ref; do
	# Extract branch name from the reference
	branch_name=$(echo "$ref" | awk '{print $2}' | sed 's/refs\/heads\///')

	# put into array
	branches+=("$branch_name")
done < <(git ls-remote --heads "$DADI_STAGING_REPOSITORY")

for branch in "${branches[@]}"; do
	safe_branch_name="${branch//\//-}"
	echo "cloning $branch into $safe_branch_name"
	git clone --depth 1 --branch "$branch" --single-branch "$DADI_STAGING_REPOSITORY" "$BRANCHES_FOLDER/$safe_branch_name"
done