-- Analytics Database Schema
-- TimescaleDB hypertables for time-series analytics data

SET search_path TO analytics, public;

-- =============================================================================
-- CONTENT VIEWS: Track page/content views with time-series optimization
-- =============================================================================
CREATE TABLE IF NOT EXISTS content_views (
    id BIGSERIAL,
    timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    user_id UUID,
    session_id UUID NOT NULL,
    content_id VARCHAR(255) NOT NULL,
    content_type VARCHAR(50) NOT NULL,
    duration_ms INTEGER,
    referrer VARCHAR(500),
    user_agent VARCHAR(500),
    ip_hash VARCHAR(64),
    metadata JSONB DEFAULT '{}',
    PRIMARY KEY (id, timestamp)
);

-- Convert to hypertable (7-day chunks)
SELECT create_hypertable('content_views', 'timestamp',
    chunk_time_interval => INTERVAL '7 days',
    if_not_exists => TRUE
);

-- =============================================================================
-- ENGAGEMENT METRICS: User interactions (likes, shares, comments, etc.)
-- =============================================================================
CREATE TABLE IF NOT EXISTS engagement_metrics (
    id BIGSERIAL,
    timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    user_id UUID,
    session_id UUID NOT NULL,
    metric_type VARCHAR(50) NOT NULL,
    target_id VARCHAR(255) NOT NULL,
    target_type VARCHAR(50) NOT NULL,
    value INTEGER DEFAULT 1,
    metadata JSONB DEFAULT '{}',
    PRIMARY KEY (id, timestamp)
);

SELECT create_hypertable('engagement_metrics', 'timestamp',
    chunk_time_interval => INTERVAL '7 days',
    if_not_exists => TRUE
);

-- =============================================================================
-- REVENUE METRICS: Financial tracking for analytics
-- =============================================================================
CREATE TABLE IF NOT EXISTS revenue_metrics (
    id BIGSERIAL,
    timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    user_id UUID NOT NULL,
    transaction_type VARCHAR(50) NOT NULL,
    amount_cents BIGINT NOT NULL,
    currency VARCHAR(3) DEFAULT 'USD',
    source VARCHAR(100),
    metadata JSONB DEFAULT '{}',
    PRIMARY KEY (id, timestamp)
);

SELECT create_hypertable('revenue_metrics', 'timestamp',
    chunk_time_interval => INTERVAL '7 days',
    if_not_exists => TRUE
);

-- =============================================================================
-- DASHBOARD SNAPSHOTS: Pre-computed dashboard metrics
-- =============================================================================
CREATE TABLE IF NOT EXISTS dashboard_snapshots (
    id BIGSERIAL,
    timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    user_id UUID NOT NULL,
    snapshot_type VARCHAR(50) NOT NULL,
    metrics JSONB NOT NULL,
    period_start TIMESTAMPTZ NOT NULL,
    period_end TIMESTAMPTZ NOT NULL,
    PRIMARY KEY (id, timestamp)
);

SELECT create_hypertable('dashboard_snapshots', 'timestamp',
    chunk_time_interval => INTERVAL '30 days',
    if_not_exists => TRUE
);

-- =============================================================================
-- RANKING SNAPSHOTS: Historical ranking data
-- =============================================================================
CREATE TABLE IF NOT EXISTS ranking_snapshots (
    id BIGSERIAL,
    timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    entity_id UUID NOT NULL,
    entity_type VARCHAR(50) NOT NULL,
    rank INTEGER NOT NULL,
    score DECIMAL(10, 4),
    category VARCHAR(100),
    metadata JSONB DEFAULT '{}',
    PRIMARY KEY (id, timestamp)
);

SELECT create_hypertable('ranking_snapshots', 'timestamp',
    chunk_time_interval => INTERVAL '7 days',
    if_not_exists => TRUE
);

-- =============================================================================
-- LISTING PERFORMANCE: Performance metrics for listings
-- =============================================================================
CREATE TABLE IF NOT EXISTS listing_performance (
    id BIGSERIAL,
    timestamp TIMESTAMPTZ NOT NULL DEFAULT NOW(),
    listing_id UUID NOT NULL,
    user_id UUID NOT NULL,
    views INTEGER DEFAULT 0,
    clicks INTEGER DEFAULT 0,
    conversions INTEGER DEFAULT 0,
    revenue_cents BIGINT DEFAULT 0,
    metadata JSONB DEFAULT '{}',
    PRIMARY KEY (id, timestamp)
);

SELECT create_hypertable('listing_performance', 'timestamp',
    chunk_time_interval => INTERVAL '7 days',
    if_not_exists => TRUE
);

-- =============================================================================
-- INDEXES
-- =============================================================================
CREATE INDEX IF NOT EXISTS idx_content_views_user ON content_views (user_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_content_views_content ON content_views (content_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_engagement_user ON engagement_metrics (user_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_engagement_target ON engagement_metrics (target_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_revenue_user ON revenue_metrics (user_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_dashboard_user ON dashboard_snapshots (user_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_ranking_entity ON ranking_snapshots (entity_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_listing_perf_user ON listing_performance (user_id, timestamp DESC);
CREATE INDEX IF NOT EXISTS idx_listing_perf_listing ON listing_performance (listing_id, timestamp DESC);