CREATE TABLE IF NOT EXISTS users (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    full_name VARCHAR(160) NOT NULL,
    email VARCHAR(190) NOT NULL UNIQUE,
    password_hash VARCHAR(255) NOT NULL,
    platform_role ENUM('platform_admin', 'user') NOT NULL DEFAULT 'user',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS tenants (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    name VARCHAR(190) NOT NULL,
    slug VARCHAR(120) NOT NULL UNIQUE,
    plan ENUM('starter', 'team', 'business') NOT NULL DEFAULT 'starter',
    status ENUM('trial', 'active', 'suspended') NOT NULL DEFAULT 'trial',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS tenant_domains (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    host VARCHAR(190) NOT NULL UNIQUE,
    is_primary TINYINT(1) NOT NULL DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_tenant_domains_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS tenant_memberships (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    user_id BIGINT UNSIGNED NOT NULL,
    role ENUM('owner', 'admin', 'member', 'device') NOT NULL DEFAULT 'member',
    status ENUM('active', 'invited', 'disabled') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uniq_tenant_user (tenant_id, user_id),
    CONSTRAINT fk_memberships_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_memberships_user FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS tenant_settings (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    currency_code CHAR(3) NOT NULL DEFAULT 'EUR',
    default_product_price_cents INT NOT NULL DEFAULT 120,
    allow_self_service TINYINT(1) NOT NULL DEFAULT 1,
    allow_paper_lists TINYINT(1) NOT NULL DEFAULT 1,
    allow_rfid TINYINT(1) NOT NULL DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
    UNIQUE KEY uniq_tenant_settings (tenant_id),
    CONSTRAINT fk_tenant_settings_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS members (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    user_id BIGINT UNSIGNED NULL,
    display_name VARCHAR(160) NOT NULL,
    email VARCHAR(190) NULL,
    access_pin VARCHAR(20) NULL,
    status ENUM('active', 'archived') NOT NULL DEFAULT 'active',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uniq_member_email (tenant_id, email),
    CONSTRAINT fk_members_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_members_user FOREIGN KEY (user_id) REFERENCES users (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS products (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    name VARCHAR(120) NOT NULL,
    sku VARCHAR(60) NULL,
    is_active TINYINT(1) NOT NULL DEFAULT 1,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_products_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS product_prices (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    product_id BIGINT UNSIGNED NOT NULL,
    price_cents INT NOT NULL,
    valid_from DATETIME NOT NULL,
    valid_until DATETIME NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_product_prices_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_product_prices_product FOREIGN KEY (product_id) REFERENCES products (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS capture_sources (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    code VARCHAR(60) NOT NULL,
    name VARCHAR(120) NOT NULL,
    channel ENUM('paper', 'digital', 'admin', 'rfid') NOT NULL,
    is_system TINYINT(1) NOT NULL DEFAULT 0,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uniq_capture_source_code (tenant_id, code),
    CONSTRAINT fk_capture_sources_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS paper_sheets (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    title VARCHAR(190) NOT NULL,
    period_label VARCHAR(120) NULL,
    period_start DATE NULL,
    period_end DATE NULL,
    status ENUM('draft', 'posted') NOT NULL DEFAULT 'draft',
    notes TEXT NULL,
    created_by_user_id BIGINT UNSIGNED NULL,
    posted_at DATETIME NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_paper_sheets_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_paper_sheets_user FOREIGN KEY (created_by_user_id) REFERENCES users (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS paper_sheet_lines (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    paper_sheet_id BIGINT UNSIGNED NOT NULL,
    tenant_id BIGINT UNSIGNED NOT NULL,
    member_id BIGINT UNSIGNED NOT NULL,
    product_id BIGINT UNSIGNED NOT NULL,
    quantity DECIMAL(8,2) NOT NULL DEFAULT 1.00,
    effective_at DATETIME NULL,
    note VARCHAR(255) NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_paper_sheet_lines_sheet FOREIGN KEY (paper_sheet_id) REFERENCES paper_sheets (id) ON DELETE CASCADE,
    CONSTRAINT fk_paper_sheet_lines_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_paper_sheet_lines_member FOREIGN KEY (member_id) REFERENCES members (id) ON DELETE CASCADE,
    CONSTRAINT fk_paper_sheet_lines_product FOREIGN KEY (product_id) REFERENCES products (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS consumption_events (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    member_id BIGINT UNSIGNED NOT NULL,
    product_id BIGINT UNSIGNED NOT NULL,
    source_id BIGINT UNSIGNED NOT NULL,
    paper_sheet_line_id BIGINT UNSIGNED NULL,
    quantity DECIMAL(8,2) NOT NULL DEFAULT 1.00,
    unit_price_cents INT NOT NULL,
    total_cents INT NOT NULL,
    effective_at DATETIME NOT NULL,
    recorded_at DATETIME NOT NULL,
    recorded_by_user_id BIGINT UNSIGNED NULL,
    source_reference VARCHAR(120) NULL,
    notes TEXT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_consumption_events_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_consumption_events_member FOREIGN KEY (member_id) REFERENCES members (id) ON DELETE CASCADE,
    CONSTRAINT fk_consumption_events_product FOREIGN KEY (product_id) REFERENCES products (id) ON DELETE CASCADE,
    CONSTRAINT fk_consumption_events_source FOREIGN KEY (source_id) REFERENCES capture_sources (id) ON DELETE CASCADE,
    CONSTRAINT fk_consumption_events_sheet_line FOREIGN KEY (paper_sheet_line_id) REFERENCES paper_sheet_lines (id) ON DELETE SET NULL,
    CONSTRAINT fk_consumption_events_recorded_by FOREIGN KEY (recorded_by_user_id) REFERENCES users (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS ledger_entries (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    member_id BIGINT UNSIGNED NULL,
    source_id BIGINT UNSIGNED NULL,
    type ENUM('consumption', 'payment', 'correction', 'credit', 'opening_balance') NOT NULL,
    reference_type VARCHAR(60) NULL,
    reference_id BIGINT UNSIGNED NULL,
    description VARCHAR(255) NOT NULL,
    occurred_at DATETIME NOT NULL,
    created_by_user_id BIGINT UNSIGNED NULL,
    reversal_of_entry_id BIGINT UNSIGNED NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_ledger_entries_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_ledger_entries_member FOREIGN KEY (member_id) REFERENCES members (id) ON DELETE SET NULL,
    CONSTRAINT fk_ledger_entries_source FOREIGN KEY (source_id) REFERENCES capture_sources (id) ON DELETE SET NULL,
    CONSTRAINT fk_ledger_entries_user FOREIGN KEY (created_by_user_id) REFERENCES users (id) ON DELETE SET NULL,
    CONSTRAINT fk_ledger_entries_reversal FOREIGN KEY (reversal_of_entry_id) REFERENCES ledger_entries (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS ledger_lines (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    ledger_entry_id BIGINT UNSIGNED NOT NULL,
    tenant_id BIGINT UNSIGNED NOT NULL,
    member_id BIGINT UNSIGNED NULL,
    account_code ENUM('member_balance', 'cashbox', 'coffee_revenue') NOT NULL,
    amount_cents INT NOT NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_ledger_lines_entry FOREIGN KEY (ledger_entry_id) REFERENCES ledger_entries (id) ON DELETE CASCADE,
    CONSTRAINT fk_ledger_lines_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_ledger_lines_member FOREIGN KEY (member_id) REFERENCES members (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS rfid_devices (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    name VARCHAR(120) NOT NULL,
    location_label VARCHAR(160) NULL,
    device_token VARCHAR(80) NOT NULL UNIQUE,
    status ENUM('planned', 'active', 'disabled') NOT NULL DEFAULT 'planned',
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT fk_rfid_devices_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS rfid_tags (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    member_id BIGINT UNSIGNED NULL,
    uid_hash CHAR(64) NOT NULL,
    label VARCHAR(120) NULL,
    status ENUM('active', 'lost', 'retired') NOT NULL DEFAULT 'active',
    last_seen_at DATETIME NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uniq_rfid_tag (tenant_id, uid_hash),
    CONSTRAINT fk_rfid_tags_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_rfid_tags_member FOREIGN KEY (member_id) REFERENCES members (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS rfid_events (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NOT NULL,
    device_id BIGINT UNSIGNED NULL,
    external_event_id VARCHAR(120) NULL,
    uid_hash CHAR(64) NOT NULL,
    payload_json JSON NULL,
    status ENUM('received', 'linked', 'ignored', 'error') NOT NULL DEFAULT 'received',
    received_at DATETIME NOT NULL,
    processed_at DATETIME NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    UNIQUE KEY uniq_rfid_external_event (tenant_id, external_event_id),
    CONSTRAINT fk_rfid_events_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE CASCADE,
    CONSTRAINT fk_rfid_events_device FOREIGN KEY (device_id) REFERENCES rfid_devices (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;

CREATE TABLE IF NOT EXISTS audit_events (
    id BIGINT UNSIGNED AUTO_INCREMENT PRIMARY KEY,
    tenant_id BIGINT UNSIGNED NULL,
    actor_user_id BIGINT UNSIGNED NULL,
    action VARCHAR(120) NOT NULL,
    target_type VARCHAR(80) NOT NULL,
    target_id BIGINT UNSIGNED NULL,
    result ENUM('success', 'failure') NOT NULL,
    request_id CHAR(36) NOT NULL,
    ip_hash CHAR(64) NULL,
    user_agent_hash CHAR(64) NULL,
    meta_json JSON NULL,
    created_at DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
    INDEX idx_audit_tenant_created (tenant_id, created_at),
    CONSTRAINT fk_audit_events_tenant FOREIGN KEY (tenant_id) REFERENCES tenants (id) ON DELETE SET NULL,
    CONSTRAINT fk_audit_events_user FOREIGN KEY (actor_user_id) REFERENCES users (id) ON DELETE SET NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;