-- ═══════════════════════════════════════════════════════════════
-- 008  v_timeline
--
-- 007's tables, indexes and all eight triggers landed; its view did
-- not. This file creates it, and nothing else.
--
-- The definition below is byte-identical to the one at the foot of
-- 007. That is deliberate: a fresh database built from 007 and an
-- existing one upgraded through 008 must end up with the same view,
-- or a restore from backup six months from now produces a subtly
-- different site. Leave 007 exactly as it is.
--
-- No BEGIN...END anywhere in this file — two plain statements and a
-- pragma — so a runner that splits on semicolons treats it the same
-- way one that doesn't would. 007's triggers are the only place in
-- the schema where that distinction bites, and they are already in.
--
-- Safe to run twice: DROP VIEW IF EXISTS makes it idempotent, and
-- dropping a view touches no data.
--
--   PRAGMA user_version;   -- reads 7 before this file
-- ═══════════════════════════════════════════════════════════════

DROP VIEW IF EXISTS v_timeline;

CREATE VIEW v_timeline AS
SELECT
  t.id,
  t.kind,
  t.ref_kind,
  t.ref_id,
  t.precision,
  t.is_featured,
  t.is_published,
  t.sort_order,

  COALESCE(t.occurred_on, e.starts_on, pa.awarded_on)   AS effective_date,

  COALESCE(
    t.title,
    e.title,
    o.name,
    aw.name,
    p.display_name,
    tm.name
  )                                                     AS effective_title,

  COALESCE(t.blurb, e.tagline, o.tagline, aw.description, p.tagline, tm.tagline)
                                                        AS effective_blurb,
  t.meta,
  t.link_url,

  -- Filename only. The directory is the frontend's business.
  COALESCE(e.event_logo, e.org_logo, o.logo, aw.logo, p.photo, tm.logo)
                                                        AS effective_logo,

  o.kind                                                AS org_kind,
  tm.org_id                                             AS team_org_id,
  tm.name                                               AS team_name,

  -- Whether the referenced record is itself visible. An entry must not
  -- outlive the thing it points at being unpublished — a draft event
  -- would otherwise leak its title and date onto a public page. Null
  -- for a standalone milestone, which answers to nothing but its own
  -- is_published.
  CASE t.ref_kind
    WHEN 'event'        THEN e.is_published
    WHEN 'organization' THEN o.is_published
    WHEN 'person'       THEN p.is_published
    WHEN 'team'         THEN tm.is_published
    ELSE NULL
  END                                                   AS ref_is_published,
  t.occurred_on,
  t.title                                               AS title_override
FROM timeline_entries t
LEFT JOIN events        e  ON t.ref_kind = 'event'        AND e.id  = t.ref_id
LEFT JOIN organizations o  ON t.ref_kind = 'organization' AND o.id  = t.ref_id
LEFT JOIN awards        aw ON t.ref_kind = 'award'        AND aw.id = t.ref_id
LEFT JOIN people        p  ON t.ref_kind = 'person'       AND p.id  = t.ref_id
LEFT JOIN teams         tm ON t.ref_kind = 'team'         AND tm.id = t.ref_id
LEFT JOIN person_awards pa ON t.ref_kind = 'award'        AND pa.award_id = t.ref_id
                              AND pa.id = (SELECT MIN(id) FROM person_awards
                                            WHERE award_id = t.ref_id);

PRAGMA user_version = 8;