-- TIP: Transceiver Intelligence Platform
-- Migration 003: TimescaleDB Hypertables

-- ============================================================
-- PRICE OBSERVATIONS (Real-time competitor pricing)
-- ============================================================
CREATE TABLE IF NOT EXISTS price_observations (
    time                TIMESTAMPTZ NOT NULL,
    transceiver_id      UUID NOT NULL,
    source_vendor_id    UUID NOT NULL,
    price               NUMERIC NOT NULL,
    currency            TEXT DEFAULT 'USD',
    stock_level         TEXT CHECK (stock_level IN ('in_stock','low_stock','out_of_stock','on_request','discontinued')),
    quantity_available  INTEGER,
    lead_time_days      INTEGER,
    min_order_qty       INTEGER,
    url                 TEXT,
    content_hash        TEXT
);

SELECT create_hypertable('price_observations', by_range('time'),
    if_not_exists => TRUE);

-- ============================================================
-- STOCK OBSERVATIONS (Separate stock tracking)
-- ============================================================
CREATE TABLE IF NOT EXISTS stock_observations (
    time                TIMESTAMPTZ NOT NULL,
    transceiver_id      UUID NOT NULL,
    source_vendor_id    UUID NOT NULL,
    in_stock            BOOLEAN NOT NULL,
    quantity_available  INTEGER,
    lead_time_days      INTEGER,
    content_hash        TEXT
);

SELECT create_hypertable('stock_observations', by_range('time'),
    if_not_exists => TRUE);

-- ============================================================
-- MARKET METRICS (Hype Cycle input data)
-- ============================================================
CREATE TABLE IF NOT EXISTS market_metrics (
    time                TIMESTAMPTZ NOT NULL,
    technology          TEXT NOT NULL,
    metric_type         TEXT NOT NULL CHECK (metric_type IN (
        'vendor_count','shipment_share','asp_decline_rate',
        'media_hype_index','patent_filings','port_shipments',
        'revenue_usd','asp_usd'
    )),
    value               NUMERIC NOT NULL,
    source              TEXT,
    notes               TEXT
);

SELECT create_hypertable('market_metrics', by_range('time'),
    if_not_exists => TRUE);

-- ============================================================
-- CONTINUOUS AGGREGATES
-- ============================================================

-- Daily price aggregates
CREATE MATERIALIZED VIEW IF NOT EXISTS price_daily
WITH (timescaledb.continuous) AS
SELECT
    time_bucket('1 day', time) AS bucket,
    transceiver_id,
    source_vendor_id,
    AVG(price) AS avg_price,
    MIN(price) AS min_price,
    MAX(price) AS max_price,
    last(stock_level, time) AS latest_stock,
    COUNT(*) AS observation_count
FROM price_observations
GROUP BY bucket, transceiver_id, source_vendor_id
WITH NO DATA;

-- Weekly price aggregates
CREATE MATERIALIZED VIEW IF NOT EXISTS price_weekly
WITH (timescaledb.continuous) AS
SELECT
    time_bucket('7 days', time) AS bucket,
    transceiver_id,
    source_vendor_id,
    AVG(price) AS avg_price,
    MIN(price) AS min_price,
    MAX(price) AS max_price,
    COUNT(*) AS observation_count
FROM price_observations
GROUP BY bucket, transceiver_id, source_vendor_id
WITH NO DATA;

-- ============================================================
-- RETENTION POLICIES
-- ============================================================

-- Raw price data: keep 90 days
SELECT add_retention_policy('price_observations', INTERVAL '90 days',
    if_not_exists => TRUE);

-- Raw stock data: keep 90 days
SELECT add_retention_policy('stock_observations', INTERVAL '90 days',
    if_not_exists => TRUE);

-- Market metrics: keep 10 years (small volume)
-- No retention policy needed

-- ============================================================
-- REFRESH POLICIES for continuous aggregates
-- ============================================================
SELECT add_continuous_aggregate_policy('price_daily',
    start_offset => INTERVAL '3 days',
    end_offset => INTERVAL '1 hour',
    schedule_interval => INTERVAL '1 hour',
    if_not_exists => TRUE);

SELECT add_continuous_aggregate_policy('price_weekly',
    start_offset => INTERVAL '30 days',
    end_offset => INTERVAL '7 days',
    schedule_interval => INTERVAL '1 day',
    if_not_exists => TRUE);