From 6a0838d4fa6baa96e5602a5689da787d09ec2e09 Mon Sep 17 00:00:00 2001
From: Jephte Clain <Jephte.Clain@univ-reunion.fr>
Date: Thu, 25 Apr 2024 00:26:40 +0400
Subject: [PATCH] =?UTF-8?q?d=C3=A9but=20query?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/db/sqlite/Sqlite.php          | 120 ++++++++++++++---------------
 src/db/sqlite/SqliteConfig.php    |   2 +-
 src/db/sqlite/SqliteMigration.php |   2 +-
 src/db/sqlite/SqliteQuery.php     | 123 ++++++++++++++++++++++++++++++
 4 files changed, 181 insertions(+), 66 deletions(-)
 create mode 100644 src/db/sqlite/SqliteQuery.php

diff --git a/src/db/sqlite/Sqlite.php b/src/db/sqlite/Sqlite.php
index db7384b..226b45d 100644
--- a/src/db/sqlite/Sqlite.php
+++ b/src/db/sqlite/Sqlite.php
@@ -1,7 +1,7 @@
 <?php
 namespace nur\sery\db\sqlite;
 
-use nur\b\IllegalAccessException;
+use Generator;
 use nur\sery\cl;
 use SQLite3;
 use SQLite3Result;
@@ -15,14 +15,6 @@ class Sqlite {
     $sqlite->db->enableExceptions(true);
   }
 
-  static function verifix_query(&$query, ?array &$params=null): void {
-    if (is_array($query)) {
-      throw IllegalAccessException::not_implemented(); #XXX
-    } elseif (!is_string($query)) {
-      $query = strval($query);
-    }
-  }
-
   const CONFIG = [
     [self::class, "config_enableExceptions"],
   ];
@@ -61,12 +53,16 @@ class Sqlite {
 
   /** @var string */
   protected $file;
+
   /** @var int */
   protected $flags;
+
   /** @var string */
   protected $encryptionKey;
+
   /** @var array|string|callable */
   protected $config;
+
   /** @var array|string|callable */
   protected $migration;
 
@@ -76,8 +72,8 @@ class Sqlite {
   function open(): self {
     if ($this->db === null) {
       $this->db = new SQLite3($this->file, $this->flags, $this->encryptionKey);
-      SqliteConfig::with($this->config)->run($this);
-      SqliteMigration::with($this->migration)->run($this);
+      SqliteConfig::with($this->config)->configure($this);
+      SqliteMigration::with($this->migration)->migrate($this);
     }
     return $this;
   }
@@ -89,43 +85,46 @@ class Sqlite {
     }
   }
 
-  function exec($query, ?array $params=null): bool {
+  protected function checkStmt($stmt): SQLite3Stmt {
+    return SqliteException::check($this->db, $stmt);
+  }
+
+  protected function checkResult($result): SQLite3Result {
+    return SqliteException::check($this->db, $result);
+  }
+
+  function _exec(string $sql): bool {
     $this->open();
-    self::verifix_query($query, $params);
+    return $this->db->exec($sql);
+  }
+
+  function exec($sql, ?array $params=null): bool {
+    $this->open();
+    $query = new SqliteQuery($sql, $params);
     $db = $this->db;
-    if ($params === null) {
-      return $db->exec($query);
-    } else {
-      /** @var SQLite3Stmt $stmt */
-      $stmt = SqliteException::check($db, $db->prepare($query));
+    if ($query->useStmt($db, $stmt, $sql)) {
       try {
-        foreach ($params as $param => $value) {
-          SqliteException::check($db, $stmt->bindValue($param, $value));
-        }
-        /** @var SQLite3Result $result */
-        $result = SqliteException::check($db, $stmt->execute());
-        return $result->finalize();
+        return $stmt->execute()->finalize();
       } finally {
         $stmt->close();
       }
+    } else {
+      return $db->exec($sql);
     }
   }
 
-  function get($query, ?array $params=null, bool $entireRow=false) {
+  function _get(string $sql, bool $entireRow=false) {
     $this->open();
-    self::verifix_query($query, $params);
+    return $this->db->querySingle($sql, $entireRow);
+  }
+
+  function get($sql, ?array $params=null, bool $entireRow=false) {
+    $this->open();
+    $query = new SqliteQuery($sql, $params);
     $db = $this->db;
-    if ($params === null) {
-      return $db->querySingle($query, $entireRow);
-    } else {
-      /** @var SQLite3Stmt $stmt */
-      $stmt = SqliteException::check($db, $db->prepare($query));
+    if ($query->useStmt($db, $stmt, $sql)) {
       try {
-        foreach ($params as $param => $value) {
-          SqliteException::check($db, $stmt->bindValue($param, $value));
-        }
-        /** @var SQLite3Result $result */
-        $result = SqliteException::check($db, $stmt->execute());
+        $result = $this->checkResult($stmt->execute());
         try {
           $row = $result->fetchArray(SQLITE3_ASSOC);
           if ($row === false) return null;
@@ -137,42 +136,35 @@ class Sqlite {
       } finally {
         $stmt->close();
       }
+    } else {
+      return $db->querySingle($sql, $entireRow);
     }
   }
 
-  function all($query, ?array $params=null): iterable {
-    $this->open();
-    self::verifix_query($query, $params);
-    $db = $this->db;
-    if ($params === null) {
-      /** @var SQLite3Result $result */
-      $result = SqliteException::check($db, $db->query($query));
-      try {
-        while (($row = $result->fetchArray(SQLITE3_ASSOC)) !== false) {
-          yield $row;
-        }
-      } finally {
-        $result->finalize();
+  protected function _fetchResult(SQLite3Result $result): Generator {
+    try {
+      while (($row = $result->fetchArray(SQLITE3_ASSOC)) !== false) {
+        yield $row;
       }
-    } else {
-      /** @var SQLite3Stmt $stmt */
-      $stmt = SqliteException::check($db, $db->prepare($query));
+    } finally {
+      $result->finalize();
+    }
+  }
+
+  function all($sql, ?array $params=null): iterable {
+    $this->open();
+    $query = new SqliteQuery($sql, $params);
+    $db = $this->db;
+    if ($query->useStmt($db, $stmt, $sql)) {
       try {
-        foreach ($params as $param => $value) {
-          SqliteException::check($db, $stmt->bindValue($param, $value));
-        }
-        /** @var SQLite3Result $result */
-        $result = SqliteException::check($db, $stmt->execute());
-        try {
-          while (($row = $result->fetchArray(SQLITE3_ASSOC)) !== false) {
-            yield $row;
-          }
-        } finally {
-          $result->finalize();
-        }
+        $result = $this->checkResult($stmt->execute());
+        return $this->_fetchResult($result);
       } finally {
         $stmt->close();
       }
+    } else {
+      $result = $this->checkResult($db->query($sql));
+      return $this->_fetchResult($result);
     }
   }
 }
diff --git a/src/db/sqlite/SqliteConfig.php b/src/db/sqlite/SqliteConfig.php
index b5364cb..217c097 100644
--- a/src/db/sqlite/SqliteConfig.php
+++ b/src/db/sqlite/SqliteConfig.php
@@ -23,7 +23,7 @@ class SqliteConfig {
   /** @var array */
   protected $configs;
 
-  function run(Sqlite $sqlite): void {
+  function configure(Sqlite $sqlite): void {
     foreach ($this->configs as $key => $config) {
       if (is_callable($config)) {
         func::call($config, $sqlite, $key, $this);
diff --git a/src/db/sqlite/SqliteMigration.php b/src/db/sqlite/SqliteMigration.php
index a315a28..1fc5e08 100644
--- a/src/db/sqlite/SqliteMigration.php
+++ b/src/db/sqlite/SqliteMigration.php
@@ -23,7 +23,7 @@ class SqliteMigration {
   /** @var callable[]|string[]  */
   protected $migrations;
   
-  function run(Sqlite $sqlite): void {
+  function migrate(Sqlite $sqlite): void {
     $sqlite->exec("create table if not exists _migration(key varchar primary key, value varchar not null, done integer default 0)");
     foreach ($this->migrations as $key => $migration) {
       $exists = $sqlite->get("select 1 from _migration where key = :key and done = 1", [
diff --git a/src/db/sqlite/SqliteQuery.php b/src/db/sqlite/SqliteQuery.php
new file mode 100644
index 0000000..5d2edf1
--- /dev/null
+++ b/src/db/sqlite/SqliteQuery.php
@@ -0,0 +1,123 @@
+<?php
+namespace nur\sery\db\sqlite;
+
+use nur\sery\StateException;
+use nur\sery\ValueException;
+use SQLite3;
+use SQLite3Stmt;
+
+class SqliteQuery {
+  static function verifix(&$query, ?array &$params=null): void {
+    if (is_array($query)) {
+      throw StateException::not_implemented(); #XXX
+      $prefix = $query[0] ?? null;
+      if ($prefix === null) {
+        throw new ValueException("requête invalide");
+      } elseif (self::is_create($prefix)) {
+        $query = self::parse_create($query, $params);
+      } elseif (self::is_select($prefix)) {
+        $query = self::parse_select($query, $params);
+      } elseif (self::is_insert($prefix)) {
+        $query = self::parse_insert($query, $params);
+      } elseif (self::is_update($prefix)) {
+        $query = self::parse_update($query, $params);
+      } elseif (self::is_delete($prefix)) {
+        $query = self::parse_delete($query, $params);
+      } else {
+        throw new ValueException("requête invalide");
+      }
+    } elseif (!is_string($query)) {
+      $query = strval($query);
+    }
+  }
+
+  const create_SCHEMA = [
+    "prefix" => "string",
+    "table" => "string",
+    "cols" => "array",
+    "suffix" => "?string",
+  ];
+  static function is_create(string $sql): bool {
+  }
+  static function parse_create(array $query, ?array &$params=null): string {
+  }
+
+  const select_SCHEMA = [
+    "prefix" => "string",
+    "cols" => "?array",
+    "from" => "?string",
+    "where" => "?array",
+    "order by" => "?array",
+    "group by" => "?array",
+    "having" => "?array",
+  ];
+  static function is_select(string $sql): bool {
+  }
+  static function parse_select(array $query, ?array &$params=null): string {
+  }
+
+  const insert_SCHEMA = [
+    "prefix" => "string",
+    "into" => "?string",
+    "cols" => "?array",
+    "values" => "?array",
+  ];
+  static function is_insert(string $sql): bool {
+  }
+  static function parse_insert(array $query, ?array &$params=null): string {
+  }
+
+  const update_SCHEMA = [
+    "prefix" => "string",
+    "table" => "?string",
+    "cols" => "?array",
+    "values" => "?array",
+    "where" => "?array",
+  ];
+  static function is_update(string $sql): bool {
+  }
+  static function parse_update(array $query, ?array &$params=null): string {
+  }
+
+  const delete_SCHEMA = [
+    "prefix" => "string",
+    "from" => "?string",
+    "where" => "?array",
+  ];
+  static function is_delete(string $sql): bool {
+  }
+  static function parse_delete(array $query, ?array &$params=null): string {
+  }
+
+  function __construct($sql, ?array $params=null) {
+    self::verifix($sql, $params);
+    $this->sql = $sql;
+    $this->params = $params;
+  }
+
+  /** @var string */
+  protected $sql;
+
+  /** @var ?array */
+  protected $params;
+
+  function useStmt(SQLite3 $db, ?SQLite3Stmt &$stmt=null, ?string &$sql=null): bool {
+    if ($this->params !== null) {
+      /** @var SQLite3Stmt $stmt */
+      $stmt = SqliteException::check($db, $db->prepare($this->sql));
+      $close = true;
+      try {
+        foreach ($this->params as $param => $value) {
+          SqliteException::check($db, $stmt->bindValue($param, $value));
+        }
+        $close = false;
+        return true;
+      } finally {
+        if ($close) $stmt->close();
+      }
+    } else {
+      $sql = $this->sql;
+      return false;
+    }
+  }
+}