non-booking-time-blockers (nbtb)

init-scripts/init-script.sql

@@ -313,6 +313,26 @@ CREATE TABLE exceptional_group_applications (
 
 CREATE UNIQUE INDEX idx_group_application_week ON exceptional_group_applications(week_start);
 
+-- =======================================
+-- TIME BLOCKERS TABLE
+-- =======================================
+-- Admin-defined time periods that are unavailable for booking
+-- Used for doctor appointments, extended lunch, training, etc.
+
+CREATE TABLE time_blockers (
+    id CHAR(12) PRIMARY KEY DEFAULT generate_short_id('time_blockers'),
+    start_time TIMESTAMPTZ NOT NULL,
+    duration_minutes INT NOT NULL CHECK (duration_minutes > 0),
+    description TEXT,
+    cron_expression TEXT,  -- NULL = one-off, otherwise cron pattern for recurring
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    created_by CHAR(12) REFERENCES users(id) ON DELETE SET NULL
+);
+
+-- Indexes for efficient overlap queries
+CREATE INDEX idx_time_blockers_start_time ON time_blockers(start_time);
+CREATE INDEX idx_time_blockers_cron ON time_blockers(cron_expression) WHERE cron_expression IS NOT NULL;
+
 
 -- =======================================
 -- PAYMENTS TABLE