updated medicine schedules

backend/src/db/schema.ts

@@ -287,6 +287,7 @@ export const ensureSchema = async (database: DatabaseClient = db) => {
       name VARCHAR(160) NOT NULL,
       dosage VARCHAR(160) NOT NULL,
       frequency VARCHAR(160) NOT NULL,
+      dose_schedule JSONB NOT NULL DEFAULT '[{"key":"dose-1","label":"Dose","time":""}]'::jsonb,
       route VARCHAR(80),
       start_date DATE NOT NULL,
       end_date DATE,
@@ -295,18 +296,30 @@ export const ensureSchema = async (database: DatabaseClient = db) => {
       CHECK (end_date IS NULL OR end_date >= start_date)
     );
 
+    ALTER TABLE medications
+      ADD COLUMN IF NOT EXISTS dose_schedule JSONB NOT NULL DEFAULT '[{"key":"dose-1","label":"Dose","time":""}]'::jsonb;
+
     CREATE TABLE IF NOT EXISTS medication_administrations (
       id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
       medication_id UUID NOT NULL REFERENCES medications(id) ON DELETE CASCADE,
       bird_id UUID NOT NULL REFERENCES birds(id) ON DELETE CASCADE,
       administered_on DATE NOT NULL,
+      administration_slot VARCHAR(80) NOT NULL DEFAULT 'dose-1',
       status VARCHAR(20) NOT NULL CHECK (status IN ('administered', 'missed')),
       notes VARCHAR(500),
       created_by_user_id UUID REFERENCES users(id) ON DELETE SET NULL,
-      created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
-      UNIQUE (medication_id, administered_on)
+      created_at TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
     );
 
+    ALTER TABLE medication_administrations
+      ADD COLUMN IF NOT EXISTS administration_slot VARCHAR(80) NOT NULL DEFAULT 'dose-1';
+
+    ALTER TABLE medication_administrations
+      DROP CONSTRAINT IF EXISTS medication_administrations_medication_id_administered_on_key;
+
+    CREATE UNIQUE INDEX IF NOT EXISTS idx_medication_administrations_unique_slot
+      ON medication_administrations (medication_id, administered_on, administration_slot);
+
     CREATE INDEX IF NOT EXISTS idx_weight_records_bird_recorded_on
       ON weight_records (bird_id, recorded_on DESC);