<?php
/**
 * TemplateModel - Handles ticket template operations
 */
class TemplateModel {
    private mysqli $conn;

    public function __construct(mysqli $conn) {
        $this->conn = $conn;
    }

    /**
     * Get all active templates
     *
     * @return array Array of template records
     */
    public function getAllTemplates(): array {
        $sql = "SELECT * FROM ticket_templates WHERE is_active = TRUE ORDER BY template_name";
        $result = $this->conn->query($sql);

        $templates = [];
        while ($row = $result->fetch_assoc()) {
            $templates[] = $row;
        }
        return $templates;
    }

    /**
     * Get template by ID
     *
     * @param int $templateId Template ID
     * @return array|null Template record or null if not found
     */
    public function getTemplateById(int $templateId): ?array {
        $sql = "SELECT * FROM ticket_templates WHERE template_id = ? AND is_active = TRUE";
        $stmt = $this->conn->prepare($sql);
        $stmt->bind_param("i", $templateId);
        $stmt->execute();
        $result = $stmt->get_result();

        $template = $result->fetch_assoc();
        $stmt->close();
        return $template;
    }

    /**
     * Create a new template
     *
     * @param array $data Template data
     * @param int $createdBy User ID creating the template
     * @return bool Success status
     */
    public function createTemplate(array $data, int $createdBy): bool {
        $sql = "INSERT INTO ticket_templates (template_name, title_template, description_template,
                category, type, default_priority, created_by)
                VALUES (?, ?, ?, ?, ?, ?, ?)";
        $stmt = $this->conn->prepare($sql);
        $stmt->bind_param("sssssii",
            $data['template_name'],
            $data['title_template'],
            $data['description_template'],
            $data['category'],
            $data['type'],
            $data['default_priority'],
            $createdBy
        );

        $result = $stmt->execute();
        $stmt->close();
        return $result;
    }

    /**
     * Update an existing template
     *
     * @param int $templateId Template ID
     * @param array $data Template data to update
     * @return bool Success status
     */
    public function updateTemplate(int $templateId, array $data): bool {
        $sql = "UPDATE ticket_templates SET
                template_name = ?,
                title_template = ?,
                description_template = ?,
                category = ?,
                type = ?,
                default_priority = ?
                WHERE template_id = ?";
        $stmt = $this->conn->prepare($sql);
        $stmt->bind_param("ssssiii",
            $data['template_name'],
            $data['title_template'],
            $data['description_template'],
            $data['category'],
            $data['type'],
            $data['default_priority'],
            $templateId
        );

        $result = $stmt->execute();
        $stmt->close();
        return $result;
    }

    /**
     * Deactivate a template (soft delete)
     *
     * @param int $templateId Template ID
     * @return bool Success status
     */
    public function deactivateTemplate(int $templateId): bool {
        $sql = "UPDATE ticket_templates SET is_active = FALSE WHERE template_id = ?";
        $stmt = $this->conn->prepare($sql);
        $stmt->bind_param("i", $templateId);

        $result = $stmt->execute();
        $stmt->close();
        return $result;
    }
}