-- Migration: Create all missing tables
-- Run this against the database to add missing schema

-- Functions
CREATE OR REPLACE FUNCTION update_updated_at()
RETURNS TRIGGER AS $$
BEGIN
    NEW.updated_at = CURRENT_TIMESTAMP;
    RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- Config table
CREATE TABLE IF NOT EXISTS config (
    id SERIAL PRIMARY KEY,
    key VARCHAR(255) UNIQUE NOT NULL,
    value JSONB NOT NULL,
    description TEXT,
    category VARCHAR(100) DEFAULT 'general',
    is_encrypted BOOLEAN DEFAULT FALSE,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_by INTEGER
);

-- Session audit log
CREATE TABLE IF NOT EXISTS session_audit_log (
    id SERIAL PRIMARY KEY,
    user_id INTEGER NOT NULL,
    session_id VARCHAR(255),
    event VARCHAR(50) NOT NULL,
    ip_address VARCHAR(45),
    user_agent TEXT,
    metadata JSONB DEFAULT '{}',
    timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Plesk servers
CREATE TABLE IF NOT EXISTS plesk_servers (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    host VARCHAR(255) NOT NULL,
    port INTEGER DEFAULT 8443,
    api_key TEXT,
    username VARCHAR(255),
    password_hash TEXT,
    use_https BOOLEAN DEFAULT TRUE,
    verify_ssl BOOLEAN DEFAULT TRUE,
    two_factor_enabled BOOLEAN DEFAULT FALSE,
    two_factor_method VARCHAR(50),
    connection_status VARCHAR(50) DEFAULT 'unknown',
    last_connected TIMESTAMP,
    is_active BOOLEAN DEFAULT TRUE,
    metadata JSONB DEFAULT '{}',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TRIGGER IF NOT EXISTS plesk_servers_updated_at BEFORE UPDATE ON plesk_servers
FOR EACH ROW EXECUTE FUNCTION update_updated_at();

-- SAP servers
CREATE TABLE IF NOT EXISTS sap_servers (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    host VARCHAR(255) NOT NULL,
    port INTEGER DEFAULT 50000,
    company_db VARCHAR(255) NOT NULL,
    username VARCHAR(255),
    password_hash TEXT,
    use_ssl BOOLEAN DEFAULT TRUE,
    timeout_seconds INTEGER DEFAULT 30,
    connection_status VARCHAR(50) DEFAULT 'unknown',
    last_connected TIMESTAMP,
    is_active BOOLEAN DEFAULT TRUE,
    metadata JSONB DEFAULT '{}',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TRIGGER IF NOT EXISTS sap_servers_updated_at BEFORE UPDATE ON sap_servers
FOR EACH ROW EXECUTE FUNCTION update_updated_at();

-- Customers
CREATE TABLE IF NOT EXISTS customers (
    id SERIAL PRIMARY KEY,
    sap_customer_id VARCHAR(255),
    plesk_customer_id VARCHAR(255),
    name VARCHAR(255) NOT NULL,
    email VARCHAR(255),
    status VARCHAR(50) DEFAULT 'active',
    sync_status VARCHAR(50) DEFAULT 'pending_sync',
    metadata JSONB DEFAULT '{}',
    last_sync TIMESTAMP,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Subscriptions
CREATE TABLE IF NOT EXISTS subscriptions (
    id SERIAL PRIMARY KEY,
    customer_id INTEGER NOT NULL,
    name VARCHAR(255) NOT NULL,
    description TEXT,
    start_date DATE,
    end_date DATE,
    billing_cycle VARCHAR(50),
    status VARCHAR(50) DEFAULT 'active',
    sync_status VARCHAR(50) DEFAULT 'pending_sync',
    pricing_data JSONB DEFAULT '{}',
    features JSONB DEFAULT '{}',
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Sync jobs
CREATE TABLE IF NOT EXISTS sync_jobs (
    id SERIAL PRIMARY KEY,
    job_type VARCHAR(50) NOT NULL,
    sync_direction VARCHAR(50) NOT NULL,
    status VARCHAR(50) DEFAULT 'pending',
    started_at TIMESTAMP,
    completed_at TIMESTAMP,
    records_processed INTEGER DEFAULT 0,
    records_failed INTEGER DEFAULT 0,
    records_skipped INTEGER DEFAULT 0,
    error_message TEXT,
    config_snapshot JSONB DEFAULT '{}',
    progress_percentage NUMERIC(5,2) DEFAULT 0,
    created_by INTEGER,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

CREATE TRIGGER IF NOT EXISTS sync_jobs_updated_at BEFORE UPDATE ON sync_jobs
FOR EACH ROW EXECUTE FUNCTION update_updated_at();

-- Sync logs
CREATE TABLE IF NOT EXISTS sync_logs (
    id SERIAL PRIMARY KEY,
    sync_job_id INTEGER NOT NULL,
    entity_type VARCHAR(50) NOT NULL,
    entity_id VARCHAR(255) NOT NULL,
    action VARCHAR(50) NOT NULL,
    status VARCHAR(50) NOT NULL,
    error_message TEXT,
    metadata JSONB DEFAULT '{}',
    timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    resolution_status VARCHAR(50) DEFAULT 'pending',
    resolution_action VARCHAR(50),
    resolved_by INTEGER,
    resolved_at TIMESTAMP,
    conflict_details JSONB,
    CONSTRAINT fk_sync_log_job FOREIGN KEY (sync_job_id) REFERENCES sync_jobs(id) ON DELETE CASCADE
);

-- Alert thresholds
CREATE TABLE IF NOT EXISTS alert_thresholds (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    subscription_id INTEGER,
    metric_type VARCHAR(50) NOT NULL,
    threshold_value NUMERIC(15,4) NOT NULL,
    comparison_operator VARCHAR(10) NOT NULL,
    action VARCHAR(50) NOT NULL,
    notification_channels JSONB DEFAULT '["email"]',
    is_active BOOLEAN DEFAULT TRUE,
    last_triggered TIMESTAMP,
    created_by INTEGER,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Alert history
CREATE TABLE IF NOT EXISTS alert_history (
    id SERIAL PRIMARY KEY,
    threshold_id INTEGER NOT NULL,
    subscription_id INTEGER,
    actual_value NUMERIC(15,4) NOT NULL,
    triggered_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    action_taken VARCHAR(50),
    notification_sent BOOLEAN DEFAULT FALSE,
    notification_error TEXT,
    CONSTRAINT fk_alert_history_threshold FOREIGN KEY (threshold_id) REFERENCES alert_thresholds(id) ON DELETE CASCADE
);

-- Billing records
CREATE TABLE IF NOT EXISTS billing_records (
    id SERIAL PRIMARY KEY,
    subscription_id INTEGER NOT NULL,
    customer_id INTEGER NOT NULL,
    period_start DATE NOT NULL,
    period_end DATE NOT NULL,
    usage_data JSONB NOT NULL DEFAULT '{}',
    calculated_amount NUMERIC(12,2) NOT NULL,
    currency VARCHAR(3) DEFAULT 'EUR',
    sap_invoice_id VARCHAR(255),
    invoice_status VARCHAR(50) DEFAULT 'draft',
    notes TEXT,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Pricing config
CREATE TABLE IF NOT EXISTS pricing_config (
    id SERIAL PRIMARY KEY,
    name VARCHAR(255) NOT NULL,
    metric_type VARCHAR(50) NOT NULL,
    unit VARCHAR(50) NOT NULL,
    rate_per_unit NUMERIC(10,4) NOT NULL,
    currency VARCHAR(3) DEFAULT 'EUR',
    is_active BOOLEAN DEFAULT TRUE,
    valid_from DATE DEFAULT CURRENT_DATE,
    valid_to DATE,
    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
);

-- Default config data
INSERT INTO config (key, value, description, category) VALUES
    ('sync.default_direction', '"sap_to_plesk"', 'Default sync direction', 'sync'),
    ('sync.conflict_resolution', '"timestamp_based"', 'Default conflict resolution strategy', 'sync'),
    ('sync.interval_minutes', '60', 'Default sync interval in minutes', 'sync'),
    ('auth.session_timeout', '1800', 'Session timeout in seconds', 'auth'),
    ('system.initialized', 'false', 'System initialization flag', 'system')
ON CONFLICT (key) DO NOTHING;