<?php
require_once __DIR__ . '/../database/employees/EmployeeAccess.php';

// エラーメッセージを格納する変数
$errorMessage = '';

try {
    // EmployeeData.csv のパスを指定（プロジェクトルートにあるファイル）
    $employeeAccess = new EmployeeAccess(__DIR__ . '/../EmployeeData.csv');

    $action = isset($_GET['action']) ? $_GET['action'] : '';

    if ($action == 'list') {
        try {
            // 部分検索機能を追加：検索キーワードがあれば、社員名にキーワードが含まれるかチェック
            $keyword = isset($_GET['keyword']) ? $_GET['keyword'] : "";
            $allEmployees = $employeeAccess->getAll();
            $employees = array();
            if ($keyword != "") {
                foreach ($allEmployees as $emp) {
                    if (strpos($emp['name'], $keyword) !== false) {
                        $employees[] = $emp;
                    }
                }
            } else {
                $employees = $allEmployees;
            }
            include 'employee_list.php';
        } catch (Exception $e) {
            $errorMessage = "社員一覧の取得に失敗しました: " . $e->getMessage();
            include 'employee_list.php';
        }
    } elseif ($action == 'register') {
        if ($_SERVER['REQUEST_METHOD'] == 'POST') {
            try {
                $name  = isset($_POST['name']) ? trim($_POST['name']) : '';
                $email = isset($_POST['email']) ? trim($_POST['email']) : '';

                if ($name != '' && $email != '') {
                    $employeeAccess->add(array('name' => $name, 'email' => $email));
                    header("Location: controller.php?action=list");
                    exit;
                } else {
                    $errorMessage = "名前とメールアドレスは必須です";
                }
            } catch (InvalidArgumentException $e) {
                $errorMessage = $e->getMessage();
            } catch (Exception $e) {
                $errorMessage = "登録に失敗しました: " . $e->getMessage();
            }
        }
        include 'employee_register.php';
    } elseif ($action == 'update') {
        if ($_SERVER['REQUEST_METHOD'] == 'POST') {
            try {
                $id    = isset($_POST['id']) ? $_POST['id'] : '';
                $name  = isset($_POST['name']) ? trim($_POST['name']) : '';
                $email = isset($_POST['email']) ? trim($_POST['email']) : '';

                if ($id != '' && $name != '' && $email != '') {
                    $employeeAccess->update($id, array('name' => $name, 'email' => $email));
                    header("Location: controller.php?action=list");
                    exit;
                } else {
                    $errorMessage = "ID、名前、メールアドレスは必須です";
                }
            } catch (InvalidArgumentException $e) {
                $errorMessage = $e->getMessage();
            } catch (RuntimeException $e) {
                $errorMessage = $e->getMessage();
            } catch (Exception $e) {
                $errorMessage = "更新に失敗しました: " . $e->getMessage();
            }
            include 'employee_update.php';
        } else {
            try {
                $id = isset($_GET['id']) ? $_GET['id'] : '';
                if (empty($id)) {
                    $errorMessage = "IDが指定されていません";
                    include 'employee_update.php';
                } else {
                    $employees = $employeeAccess->getAll();
                    $employee = null;
                    foreach ($employees as $emp) {
                        if ($emp['id'] == $id) {
                            $employee = $emp;
                            break;
                        }
                    }
                    if ($employee === null) {
                        $errorMessage = "指定された社員が見つかりません";
                    }
                    include 'employee_update.php';
                }
            } catch (Exception $e) {
                $errorMessage = "社員情報の取得に失敗しました: " . $e->getMessage();
                include 'employee_update.php';
            }
        }
    } elseif ($action == 'delete' && isset($_GET['id'])) {
        try {
            $id = $_GET['id'];
            if (empty($id)) {
                throw new InvalidArgumentException("IDが指定されていません");
            }
            $employeeAccess->delete($id);
            header("Location: controller.php?action=list");
            exit;
        } catch (InvalidArgumentException $e) {
            $errorMessage = $e->getMessage();
            include 'employee_list.php';
        } catch (RuntimeException $e) {
            $errorMessage = $e->getMessage();
            header("Location: controller.php?action=list&error=" . urlencode($errorMessage));
            exit;
        } catch (Exception $e) {
            $errorMessage = "削除に失敗しました: " . $e->getMessage();
            header("Location: controller.php?action=list&error=" . urlencode($errorMessage));
            exit;
        }
    } else {
        include 'index.php';
    }
} catch (Exception $e) {
    // 初期化エラーなど、致命的なエラーの場合
    die("システムエラーが発生しました: " . htmlspecialchars($e->getMessage()));
}