32 lines
1.4 KiB
MySQL
32 lines
1.4 KiB
MySQL
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-- 0054_user_profiles_username.sql
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-- ----------------------------------------------------------------------------
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-- Optional username as a sign-in alternative to email. Stored alongside the
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-- canonical first/last name on user_profiles so the rest of the auth/profile
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-- code keeps a single place to look. The Better-Auth `user` table stays the
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-- source of truth for email + password; the username is a thin alias the
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-- login form looks up to resolve to the matching email before delegating
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-- to better-auth's email/password flow.
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--
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-- Constraints (enforced application-side AND in SQL):
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-- - 2..30 characters
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-- - lowercase letters, digits, dot, underscore, hyphen
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-- - case-insensitive uniqueness per install (no per-port scoping —
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-- reps move between ports and a global username keeps URLs stable)
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--
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-- The column is nullable; existing users keep email-only sign-in until they
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-- pick one.
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ALTER TABLE user_profiles
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ADD COLUMN IF NOT EXISTS username TEXT;
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-- Shape check at the DB level catches anything that slipped past the API
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-- (raw SQL inserts in tests, scripts, etc.).
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ALTER TABLE user_profiles
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ADD CONSTRAINT chk_user_profiles_username_shape
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CHECK (username IS NULL OR username ~ '^[a-z0-9._-]{2,30}$');
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-- Case-insensitive uniqueness. Partial so multiple NULLs are allowed.
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CREATE UNIQUE INDEX IF NOT EXISTS idx_user_profiles_username_unique
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ON user_profiles (LOWER(username))
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WHERE username IS NOT NULL;
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