commit c04b64d383cc3192c43bad941e36a04a20802122 · bretton.dev/coves

+68
internal/db/migrations/010_migrate_community_handles_to_singular.sql
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       -- +goose Up

     

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       -- +goose StatementBegin

     

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       -- Migration: Rename community handles from .communities. to .community.

     

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       -- This aligns with AT Protocol lexicon naming conventions (singular form)

     

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       --

     

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       -- Background:

     

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       -- All atProto record types use singular form (app.bsky.feed.post, app.bsky.graph.follow)

     

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       -- This migration updates existing community handles to follow the same pattern

     

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       --

     

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       -- Examples:

     

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       --   gardening.communities.coves.social -> gardening.community.coves.social

     

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       --   gaming.communities.coves.social -> gaming.community.coves.social

     

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       --

     

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       -- Safety: Uses REPLACE which only affects handles containing '.communities.'

     

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       -- Rollback: Available via down migration below

     

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       -- Update community handles in the communities table

     

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       UPDATE communities

     

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       SET handle = REPLACE(handle, '.communities.', '.community.')

     

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       WHERE handle LIKE '%.communities.%';

     

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       -- Verify the migration (optional - can be commented out in production)

     

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       -- This will fail if any .communities. handles remain

     

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       DO $$

     

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       DECLARE

     

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           old_format_count INTEGER;

     

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       BEGIN

     

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           SELECT COUNT(*) INTO old_format_count

     

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           FROM communities

     

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           WHERE handle LIKE '%.communities.%';

     

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           IF old_format_count > 0 THEN

     

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               RAISE EXCEPTION 'Migration incomplete: % communities still have .communities. format', old_format_count;

     

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           END IF;

     

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           RAISE NOTICE 'Migration successful: All community handles updated to .community. format';

     

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       END $$;

     

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       -- +goose StatementEnd

     

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       -- +goose Down

     

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       -- +goose StatementBegin

     

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       -- Rollback: Revert handles from .community. back to .communities.

     

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       -- Only use this if you need to rollback the naming convention change

     

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       UPDATE communities

     

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       SET handle = REPLACE(handle, '.community.', '.communities.')

     

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       WHERE handle LIKE '%.community.%';

     

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       -- Verify the rollback

     

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       DO $$

     

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       DECLARE

     

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           new_format_count INTEGER;

     

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       BEGIN

     

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           SELECT COUNT(*) INTO new_format_count

     

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           FROM communities

     

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           WHERE handle LIKE '%.community.%';

     

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           IF new_format_count > 0 THEN

     

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               RAISE EXCEPTION 'Rollback incomplete: % communities still have .community. format', new_format_count;

     

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           END IF;

     

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           RAISE NOTICE 'Rollback successful: All community handles reverted to .communities. format';

     

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       END $$;

     

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       -- +goose StatementEnd