apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ include "postgresql.fullname" . }}-config
  labels:
    {{- include "postgresql.labels" . | nindent 4 }}
data:
  {{- if .Values.replication.enabled }}
  primary-init.sh: |
    #!/bin/bash
    set -e
    
    # レプリケーションユーザーの作成
    psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" <<-EOSQL
      CREATE USER {{ .Values.postgres.replicationUser }} WITH REPLICATION ENCRYPTED PASSWORD '${REPLICATION_PASSWORD}';
    EOSQL
    
    # pg_hba.confの設定
    echo "host replication {{ .Values.postgres.replicationUser }} 0.0.0.0/0 md5" >> ${PGDATA}/pg_hba.conf
    
    # postgresql.confの設定
    cat >> ${PGDATA}/postgresql.conf <<EOF
    wal_level = replica
    max_wal_senders = 10
    max_replication_slots = 10
    hot_standby = on
    synchronous_commit = {{ .Values.replication.synchronousCommit }}
    synchronous_standby_names = 'ANY {{ .Values.replication.numSynchronousReplicas }} (*)'
    EOF
    
    # PostgreSQLの再起動
    pg_ctl reload

  replica-init.sh: |
    #!/bin/bash
    set -e
    
    # データディレクトリが空の場合のみレプリケーションを初期化
    if [ ! -s "${PGDATA}/PG_VERSION" ]; then
      echo "Initializing replica from primary..."
      
      rm -rf ${PGDATA}/*
      
      PGPASSWORD=${REPLICATION_PASSWORD} pg_basebackup \
        -h {{ include "postgresql.fullname" . }}-primary \
        -D ${PGDATA} \
        -U {{ .Values.postgres.replicationUser }} \
        -v -P -W -R
      
      # standby.signalの作成
      touch ${PGDATA}/standby.signal
      
      echo "Replica initialization completed"
    fi
  {{- end }}
  
  {{- if .Values.backup.enabled }}
  backup.sh: |
    #!/bin/bash
    set -e
    
    BACKUP_DIR="/backup"
    TIMESTAMP=$(date +%Y%m%d_%H%M%S)
    BACKUP_FILE="${BACKUP_DIR}/backup_${TIMESTAMP}.sql.gz"
    RETENTION_DAYS={{ .Values.backup.retention }}
    
    echo "Starting backup at ${TIMESTAMP}"
    
    # バックアップの実行
    pg_dumpall -U ${POSTGRES_USER} | gzip > ${BACKUP_FILE}
    
    # 古いバックアップの削除
    find ${BACKUP_DIR} -name "backup_*.sql.gz" -mtime +${RETENTION_DAYS} -delete
    
    echo "Backup completed: ${BACKUP_FILE}"
    
    # バックアップサイズの確認
    ls -lh ${BACKUP_FILE}
  {{- end }}