chore: heygermany customer project

db/postgres/0019-email-verification-and-jwt-magic-links.sql

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+-- Add CASCADE to all foreign keys referencing candidate to allow candidate deletion
+ALTER TABLE app.candidate_document
+DROP CONSTRAINT candidate_document_candidate_id_fkey,
+ADD CONSTRAINT candidate_document_candidate_id_fkey
+  FOREIGN KEY (candidate_id)
+  REFERENCES app.candidate(candidate_id)
+  ON DELETE CASCADE;
+
+ALTER TABLE app.candidate_education
+DROP CONSTRAINT candidate_education_candidate_id_fkey,
+ADD CONSTRAINT candidate_education_candidate_id_fkey
+  FOREIGN KEY (candidate_id)
+  REFERENCES app.candidate(candidate_id)
+  ON DELETE CASCADE;
+
+ALTER TABLE app.candidate_transcript
+DROP CONSTRAINT candidate_transcript_candidate_id_fkey,
+ADD CONSTRAINT candidate_transcript_candidate_id_fkey
+  FOREIGN KEY (candidate_id)
+  REFERENCES app.candidate(candidate_id)
+  ON DELETE CASCADE;
+
+ALTER TABLE app.candidate_license
+DROP CONSTRAINT candidate_license_candidate_id_fkey,
+ADD CONSTRAINT candidate_license_candidate_id_fkey
+  FOREIGN KEY (candidate_id)
+  REFERENCES app.candidate(candidate_id)
+  ON DELETE CASCADE;
+
+ALTER TABLE app.candidate_language
+DROP CONSTRAINT candidate_language_candidate_id_fkey,
+ADD CONSTRAINT candidate_language_candidate_id_fkey
+  FOREIGN KEY (candidate_id)
+  REFERENCES app.candidate(candidate_id)
+  ON DELETE CASCADE;
+
+ALTER TABLE app.candidate_experience
+DROP CONSTRAINT candidate_experience_candidate_id_fkey,
+ADD CONSTRAINT candidate_experience_candidate_id_fkey
+  FOREIGN KEY (candidate_id)
+  REFERENCES app.candidate(candidate_id)
+  ON DELETE CASCADE;
+
+-- Delete duplicate emails, keeping only the first created occurrence
+DELETE FROM app.candidate
+WHERE candidate_id NOT IN (
+  SELECT candidate_id
+  FROM (
+    SELECT candidate_id,
+           ROW_NUMBER() OVER (PARTITION BY email ORDER BY created_at ASC) as rn
+    FROM app.candidate
+    WHERE email IS NOT NULL
+  ) sub
+  WHERE rn = 1
+);
+
+-- Add email verification token to user table for double opt-in
+ALTER TABLE app.user ADD COLUMN email_verification_token VARCHAR;
+
+-- Remove magic_link_expiry since JWT handles expiry internally
+ALTER TABLE app.user_auth DROP COLUMN magic_link_expiry;
+
+-- Add unique constraint to candidate email to prevent duplicate registrations
+ALTER TABLE app.candidate ADD CONSTRAINT candidate_email_unique UNIQUE (email);
+
+-- Add field to track when incomplete process reminder was sent
+ALTER TABLE app.candidate ADD COLUMN incomplete_reminder_sent_at TIMESTAMP;