-- 13_crq_columns.sql — fleettickets · unpack tickets.crq.raw into typed columns
-- ─────────────────────────────────────────────────────────────────────────────
-- CRQ (new-installation) mirror of 03_inc_columns.sql. CRQ shares the INC source's
-- IDENTICAL 32-column flat-CSV schema, so the same STORED generated columns apply:
-- the crq dataset gets real typed, indexable columns while `raw` stays the source
-- of truth (drift-safe). STORED generated columns are computed for ALL existing
-- rows on creation and auto-recomputed on every future insert/update — no loader
-- change needed.
--
-- tickets.eat_ts() (EAT wall-clock text -> timestamptz, IMMUTABLE) already exists
-- from 03_inc_columns.sql — reuse it, don't redefine. See that file's note on why
-- IMMUTABLE is safe for Kenya (fixed UTC+3, no DST).
--
-- Idempotent: safe on a fresh DB and re-appliable on the live DB.
-- ─────────────────────────────────────────────────────────────────────────────

SET search_path = tickets, public;

ALTER TABLE tickets.crq
  -- text
  ADD COLUMN IF NOT EXISTS service_type      text GENERATED ALWAYS AS (raw->>'service_type') STORED,
  ADD COLUMN IF NOT EXISTS bucket            text GENERATED ALWAYS AS (raw->>'bucket') STORED,
  ADD COLUMN IF NOT EXISTS raw_status        text GENERATED ALWAYS AS (raw->>'raw_status') STORED,
  ADD COLUMN IF NOT EXISTS normalized_status text GENERATED ALWAYS AS (raw->>'normalized_status') STORED,
  ADD COLUMN IF NOT EXISTS cluster           text GENERATED ALWAYS AS (raw->>'cluster') STORED,
  ADD COLUMN IF NOT EXISTS region            text GENERATED ALWAYS AS (raw->>'region') STORED,
  ADD COLUMN IF NOT EXISTS location_name     text GENERATED ALWAYS AS (raw->>'location_name') STORED,
  ADD COLUMN IF NOT EXISTS assigned_team     text GENERATED ALWAYS AS (raw->>'assigned_team') STORED,
  ADD COLUMN IF NOT EXISTS owner             text GENERATED ALWAYS AS (raw->>'owner') STORED,
  ADD COLUMN IF NOT EXISTS sla_status        text GENERATED ALWAYS AS (raw->>'sla_status') STORED,
  -- numeric / float
  ADD COLUMN IF NOT EXISTS mttr      numeric          GENERATED ALWAYS AS (NULLIF(raw->>'mttr','')::numeric) STORED,
  ADD COLUMN IF NOT EXISTS latitude  double precision GENERATED ALWAYS AS (NULLIF(raw->>'latitude','')::double precision) STORED,
  ADD COLUMN IF NOT EXISTS longitude double precision GENERATED ALWAYS AS (NULLIF(raw->>'longitude','')::double precision) STORED,
  -- boolean
  ADD COLUMN IF NOT EXISTS is_actionable   boolean GENERATED ALWAYS AS (NULLIF(raw->>'is_actionable','')::boolean) STORED,
  ADD COLUMN IF NOT EXISTS is_auto_created boolean GENERATED ALWAYS AS (NULLIF(raw->>'is_auto_created','')::boolean) STORED,
  ADD COLUMN IF NOT EXISTS is_auto_closed  boolean GENERATED ALWAYS AS (NULLIF(raw->>'is_auto_closed','')::boolean) STORED,
  ADD COLUMN IF NOT EXISTS is_alarm        boolean GENERATED ALWAYS AS (NULLIF(raw->>'is_alarm','')::boolean) STORED,
  -- timestamps (EAT wall-clock -> timestamptz). created_at/updated_at are the
  -- EXPORT pipeline's bookkeeping (not ticket lifecycle), hence the source_ prefix.
  ADD COLUMN IF NOT EXISTS created_at_service timestamptz GENERATED ALWAYS AS (tickets.eat_ts(raw->>'created_at_service')) STORED,
  ADD COLUMN IF NOT EXISTS scheduled_at       timestamptz GENERATED ALWAYS AS (tickets.eat_ts(raw->>'scheduled_at')) STORED,
  ADD COLUMN IF NOT EXISTS closed_at          timestamptz GENERATED ALWAYS AS (tickets.eat_ts(raw->>'closed_at')) STORED,
  ADD COLUMN IF NOT EXISTS last_seen_at       timestamptz GENERATED ALWAYS AS (tickets.eat_ts(raw->>'last_seen_at')) STORED,
  ADD COLUMN IF NOT EXISTS first_seen_at      timestamptz GENERATED ALWAYS AS (tickets.eat_ts(raw->>'first_seen_at')) STORED,
  ADD COLUMN IF NOT EXISTS source_created_at  timestamptz GENERATED ALWAYS AS (tickets.eat_ts(raw->>'created_at')) STORED,
  ADD COLUMN IF NOT EXISTS source_updated_at  timestamptz GENERATED ALWAYS AS (tickets.eat_ts(raw->>'updated_at')) STORED;

-- indexes on the new typed columns (serve cluster / team / closure queries)
CREATE INDEX IF NOT EXISTS ix_crq_norm_status_col ON tickets.crq (normalized_status);
CREATE INDEX IF NOT EXISTS ix_crq_cluster_col     ON tickets.crq (cluster);
CREATE INDEX IF NOT EXISTS ix_crq_assigned_team   ON tickets.crq (assigned_team);
CREATE INDEX IF NOT EXISTS ix_crq_closed_at       ON tickets.crq (closed_at);
CREATE INDEX IF NOT EXISTS ix_crq_actionable_col  ON tickets.crq (is_actionable) WHERE is_actionable;