Рефакторинг

src/Database/JsonInstall.php

@@ -0,0 +1,143 @@
+<?php
+//Действия с базой данных согласно json файлу.
+
+class Database_JsonInstall {
+    public $db_manager;
+    public $serialColumns;
+
+	public function __construct(Database_Manager $db_manager) {
+		$this->db_manager = $db_manager;
+	}
+
+	function install($dbinit_path, $dbfill_path = null) {
+		$dbinit_file = file_get_contents($dbinit_path);
+		if (is_string($dbinit_file)) {
+			$initActions = json_decode($dbinit_file, true);
+			if (!$initActions) {
+				echo "Invalid dbinit.json ".$dbinit_file;
+				return 0;
+			}
+		} else {
+			echo "No dbinit.json";
+			return 0;
+		}
+
+		$this->initDataBase($initActions, $dbinit_path);
+		if ($dbfill_path) {
+			$this->fillDataBase($dbfill_path);
+		}
+		$this->makeConstraints($initActions);
+	}
+
+	function missingTables($tables) {
+		$actual_tables = $this->db_manager->GetAllTableNames();
+		$missingTables = [];
+		foreach ($tables as $table) {
+			if (!in_array($table, $actual_tables))
+				$missingTables[] = $table;
+		}
+		return $missingTables;
+	}
+
+	//Создать таблицы
+	function initDataBase(/*.array.*/$initActions, $dbinit_path) {
+		$pg = $this->db_manager->db->isPostgres();
+		if (!$pg) {
+			$refs = [];
+			//В sqlite нет alter reference. Референсы надо создавать при создании таблицы.
+			foreach ($initActions as $action) {
+				if ($action["type"] == "alterReference") {
+					if (!isset($refs[$action["table"]]))
+						$refs[$action["table"]] = [];
+					$refs[$action["table"]][]=$action;//добавить к списку референсов для таблицы
+				}
+			}
+		}
+
+		foreach ($initActions as $action) {
+			if (!$pg) {
+				if ($action["type"] == "createTable") {
+					$table_name = $action["table_name"];
+					if (isset($refs[$table_name])) {
+						foreach ($refs[$table_name] as $value) {
+							$action['fields'][$value['column']]['references'] =
+							$value['refTable']."(".$value['refColumn'].")";
+						}
+					}
+
+				}
+			}
+			if ($action["type"] != "alterReference") {
+				$this->db_manager->ExecuteAction($action, $dbinit_path);
+			}
+		}
+
+		//Запомнить все колонки serial
+		$this->serialColumns = [];
+		if ($pg) {
+			foreach ($initActions as $action) {
+				if ($action["type"] == "createTable") {
+					foreach ($action["fields"] as $name => $field) {
+						if ($field["type"]=="serial") {
+							$this->serialColumns[] = [
+                                "table"=>$action["table_name"],
+								"column"=>$name
+                            ];
+						}
+					}
+				}
+			}
+		}
+	}
+
+	//Заполнить данными
+	function fillDataBase($dbfill_file_path) {
+		$dbfill_file = file_get_contents($dbfill_file_path);
+		if (is_string($dbfill_file)) {
+			$actions = json_decode($dbfill_file,true);
+			if ($actions) {
+				
+				//Проверка что упоминаемые в списке действий таблицы уже есть в базе
+				$affected_tables = [];
+				foreach ($actions as $action) {
+					if ($action["table_name"]) {
+						$affected_tables[$action["table_name"]] = 1;
+                    }
+                }
+
+				$missing = $this->missingTables(array_keys($affected_tables));
+				if (!empty($missing)) {
+					echo "dbfill error. Missing tables: ".implode(" ", $missing);
+					return;
+				}
+
+				//Выполнение действий
+				foreach ($actions as $action) {
+					$this->db_manager->ExecuteAction($action, $dbfill_file_path);
+				}
+			} else {
+				echo "Invalid dbfill.json";
+			}
+		} else {
+			echo "No dbfill.json";
+		}
+	}
+
+	//Обновить ключи serial и создать ограничения
+	function makeConstraints($initActions) {
+		$pg = $this->db_manager->db->isPostgres();
+		if ($pg) {
+			foreach ($this->serialColumns as $serialColumn) {
+				$this->db_manager->UpdateSerial($serialColumn["table"], $serialColumn["column"]);
+			}
+		
+			
+			foreach ($initActions as $action) {
+				if ($action["type"] == "alterReference") {
+					$this->db_manager->ExecuteAction($action);
+                }
+			}
+		}
+	}
+
+}