CREATE TABLE osint.board_view_types (
  id TEXT PRIMARY KEY,
  name TEXT NOT NULL UNIQUE
);
INSERT INTO osint.board_view_types (id,name) VALUES ('timeline','Timeline');

CREATE TABLE osint.board_views (
  id UUID PRIMARY KEY,
  board_id UUID NOT NULL REFERENCES osint.boards(id) ON DELETE CASCADE,
  view_type_id TEXT NOT NULL REFERENCES osint.board_view_types(id),
  origin_view_id UUID REFERENCES osint.board_views(id) ON DELETE SET NULL,
  placement_mode TEXT NOT NULL DEFAULT 'docked' CHECK (placement_mode IN ('docked','canvas','window')),
  dock_edge TEXT CHECK (dock_edge IN ('top','right','bottom','left')),
  xpos DOUBLE PRECISION,
  ypos DOUBLE PRECISION,
  width DOUBLE PRECISION,
  height DOUBLE PRECISION NOT NULL DEFAULT 112 CHECK (height > 0),
  z_index INTEGER NOT NULL DEFAULT 0,
  visible BOOLEAN NOT NULL DEFAULT TRUE,
  created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
  updated_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
  UNIQUE (board_id,view_type_id),
  CHECK (
    (placement_mode = 'docked' AND dock_edge IS NOT NULL)
    OR (placement_mode IN ('canvas','window') AND xpos IS NOT NULL AND ypos IS NOT NULL AND width IS NOT NULL)
  )
);
CREATE INDEX board_views_board_idx ON osint.board_views (board_id,z_index,created_at);

CREATE TABLE osint.timeline_views (
  view_id UUID PRIMARY KEY REFERENCES osint.board_views(id) ON DELETE CASCADE,
  range_mode TEXT NOT NULL DEFAULT 'auto' CHECK (range_mode IN ('auto','fixed')),
  range_start DATE,
  range_end DATE,
  CHECK (
    (range_mode = 'auto' AND range_start IS NULL AND range_end IS NULL)
    OR (range_mode = 'fixed' AND range_start IS NOT NULL AND range_end IS NOT NULL AND range_end > range_start)
  )
);

WITH created_views AS (
  INSERT INTO osint.board_views (id,board_id,view_type_id,placement_mode,dock_edge,height)
  SELECT gen_random_uuid(),b.id,'timeline','docked','bottom',112
  FROM osint.boards b
  RETURNING id,board_id
)
INSERT INTO osint.timeline_views (view_id,range_mode,range_start,range_end)
SELECT v.id,
  CASE WHEN settings.board_id IS NULL THEN 'auto' ELSE 'fixed' END,
  settings.range_start,
  settings.range_end
FROM created_views v
LEFT JOIN osint.board_timeline_settings settings ON settings.board_id=v.board_id;

DROP TABLE osint.board_timeline_settings;

COMMENT ON TABLE osint.board_views IS 'Persistent frontend projections and workspace apparatus. Views are not investigation-domain exhibits.';
COMMENT ON TABLE osint.timeline_views IS 'Timeline projection settings; temporal markers remain derived from exhibits and are never duplicated here.';