-- Analytics Database Initialization (TimescaleDB)

-- Enable extensions
CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
CREATE EXTENSION IF NOT EXISTS pg_stat_statements;

CREATE SCHEMA IF NOT EXISTS analytics;

-- Content views (hypertable)
CREATE TABLE IF NOT EXISTS analytics.content_views (
    time TIMESTAMPTZ NOT NULL,
    content_id UUID NOT NULL,
    content_type VARCHAR(50) NOT NULL,
    user_id UUID,
    session_id VARCHAR(255),
    referrer TEXT,
    user_agent TEXT,
    country VARCHAR(2),
    device_type VARCHAR(20)
);
SELECT create_hypertable('analytics.content_views', 'time', if_not_exists => TRUE);

-- Engagement metrics (hypertable)
CREATE TABLE IF NOT EXISTS analytics.engagement_metrics (
    time TIMESTAMPTZ NOT NULL,
    content_id UUID NOT NULL,
    metric_type VARCHAR(50) NOT NULL,
    value DECIMAL(12, 4) NOT NULL,
    metadata JSONB DEFAULT '{}'
);
SELECT create_hypertable('analytics.engagement_metrics', 'time', if_not_exists => TRUE);

-- Revenue metrics (hypertable)
CREATE TABLE IF NOT EXISTS analytics.revenue_metrics (
    time TIMESTAMPTZ NOT NULL,
    creator_id UUID NOT NULL,
    transaction_type VARCHAR(50) NOT NULL,
    gross_amount DECIMAL(12, 2) NOT NULL,
    net_amount DECIMAL(12, 2) NOT NULL,
    platform_fee DECIMAL(12, 2) NOT NULL,
    currency VARCHAR(3) DEFAULT 'USD'
);
SELECT create_hypertable('analytics.revenue_metrics', 'time', if_not_exists => TRUE);

-- Dashboard snapshots
CREATE TABLE IF NOT EXISTS analytics.dashboard_snapshots (
    id SERIAL PRIMARY KEY,
    snapshot_type VARCHAR(50) NOT NULL,
    period VARCHAR(20) NOT NULL,
    data JSONB NOT NULL,
    created_at TIMESTAMPTZ DEFAULT NOW()
);

-- Continuous aggregates for common queries
CREATE MATERIALIZED VIEW IF NOT EXISTS analytics.hourly_views
WITH (timescaledb.continuous) AS
SELECT
    time_bucket('1 hour', time) AS bucket,
    content_type,
    COUNT(*) as view_count,
    COUNT(DISTINCT user_id) as unique_users
FROM analytics.content_views
GROUP BY bucket, content_type
WITH NO DATA;

-- Enable compression then add compression policies (compress data older than 7 days)
ALTER TABLE analytics.content_views SET (timescaledb.compress, timescaledb.compress_orderby = 'time DESC');
SELECT add_compression_policy('analytics.content_views', INTERVAL '7 days', if_not_exists => TRUE);

ALTER TABLE analytics.engagement_metrics SET (timescaledb.compress, timescaledb.compress_orderby = 'time DESC');
SELECT add_compression_policy('analytics.engagement_metrics', INTERVAL '7 days', if_not_exists => TRUE);

ALTER TABLE analytics.revenue_metrics SET (timescaledb.compress, timescaledb.compress_orderby = 'time DESC');
SELECT add_compression_policy('analytics.revenue_metrics', INTERVAL '7 days', if_not_exists => TRUE);

-- Indexes
CREATE INDEX IF NOT EXISTS idx_views_content ON analytics.content_views(content_id, time DESC);
CREATE INDEX IF NOT EXISTS idx_engagement_content ON analytics.engagement_metrics(content_id, time DESC);
CREATE INDEX IF NOT EXISTS idx_revenue_creator ON analytics.revenue_metrics(creator_id, time DESC);

-- Permissions
GRANT ALL PRIVILEGES ON SCHEMA analytics TO lilith;
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA analytics TO lilith;
GRANT ALL PRIVILEGES ON ALL SEQUENCES IN SCHEMA analytics TO lilith;

DO $$ BEGIN RAISE NOTICE 'Analytics database initialized with TimescaleDB'; END $$;