-- schema_pre_sync.sql
-- Drops hand-managed unique indexes that sea-orm schema sync would reject.
-- The sync only compares the indexed column list against the entity's
-- #[sea_orm(indexed)] / unique_key declarations; a predicate, a NULLS NOT
-- DISTINCT clause or a column list the entity cannot express all look like a
-- stale unique key, and Postgres then issues DROP CONSTRAINT on a plain index,
-- which fails. These indexes are recreated by schema_extras.sql after sync.
--
-- Only indexes whose column list differs from an entity unique key belong
-- here. Indexes that do match (idx_issue_watch_issue_user, ..._project_user,
-- idx_issue_reaction_issue, idx_issue_reaction_comment) must NOT be dropped:
-- sync keeps them as-is and the drop would only rebuild them needlessly.
--
-- The migrate command only runs this file when the entity schema fingerprint
-- changed, so the rebuild cost is paid on schema changes, not on every start.

-- Legacy plain indexes left behind by older unique_key definitions. They no
-- longer match the entity column list, so sync would try to drop them and
-- abort because they are plain indexes.
DROP INDEX IF EXISTS "idx-issue_watch-issue_user";
DROP INDEX IF EXISTS "idx-issue-reaction-issue_user_emoji";

-- Hand-managed per-target unique keys (predicates not expressible in entities).
DROP INDEX IF EXISTS idx_issue_reaction_project;
DROP INDEX IF EXISTS idx_branch_protection_whitelist_user;
DROP INDEX IF EXISTS idx_branch_protection_whitelist_group;
DROP INDEX IF EXISTS idx_chat_message_room_nonce;
DROP INDEX IF EXISTS idx_chat_dm_pair;
DROP INDEX IF EXISTS idx_chat_gdm_key;
DROP INDEX IF EXISTS idx_chat_draft_unique;
-- scheduled messages feature removed; drop the legacy table before sync
DROP TABLE IF EXISTS user_scheduled_message;

-- legacy REST admin retired; drop its tables before sync
DROP TABLE IF EXISTS admin_audit_log;
DROP TABLE IF EXISTS admin_user;

-- CI, webhook delivery, import and search features removed
DROP TABLE IF EXISTS ci_job_token CASCADE;
DROP TABLE IF EXISTS ci_runner_token CASCADE;
DROP TABLE IF EXISTS ci_runner CASCADE;
DROP TABLE IF EXISTS ci_log_chunk CASCADE;
DROP TABLE IF EXISTS workflow_step CASCADE;
DROP TABLE IF EXISTS workflow_job CASCADE;
DROP TABLE IF EXISTS workflow_artifact CASCADE;
DROP TABLE IF EXISTS workflow_run CASCADE;
DROP TABLE IF EXISTS ci_workflow_counter CASCADE;
DROP TABLE IF EXISTS ci_actions_identity CASCADE;
DROP TABLE IF EXISTS ci_actions_schedule CASCADE;
DROP TABLE IF EXISTS ci_actions_cache CASCADE;
DROP TABLE IF EXISTS ci_deployment CASCADE;
DROP TABLE IF EXISTS ci_environment_review CASCADE;
DROP TABLE IF EXISTS ci_secret CASCADE;
DROP TABLE IF EXISTS ci_variable CASCADE;
DROP TABLE IF EXISTS ci_environment CASCADE;
DROP TABLE IF EXISTS repo_webhook_delivery CASCADE;
DROP TABLE IF EXISTS repo_webhook CASCADE;
DROP TABLE IF EXISTS webhook_delivery CASCADE;
DROP TABLE IF EXISTS webhook CASCADE;
DROP TABLE IF EXISTS import_job CASCADE;
DROP TABLE IF EXISTS search_index_job CASCADE;
DROP TABLE IF EXISTS search_repo_state CASCADE;

-- chat message full-text search removed
DROP FUNCTION IF EXISTS chat_message_search_vector_update() CASCADE;
DO $$ BEGIN
    IF to_regclass('chat_message') IS NOT NULL THEN
        DROP TRIGGER IF EXISTS chat_message_search_vector_trigger ON chat_message;
        ALTER TABLE chat_message DROP COLUMN IF EXISTS search_vector;
    END IF;
END $$;

-- pipeline tab removed from repository settings
DO $$ BEGIN
    IF to_regclass('repos') IS NOT NULL THEN
        ALTER TABLE repos DROP COLUMN IF EXISTS pipelines_public;
    END IF;
END $$;

-- rooms.parent_id used to be declared as a self-reference, so sync created
-- `fk-rooms-parent_id -> rooms(id)`. The column actually points at a directory
-- node (dir.id) — update_room validates the target is a same-space DirKind::Dir
-- row before writing — so every attempt to file a channel into a folder was
-- rejected by that constraint and the feature never once succeeded. Sync only
-- adds missing foreign keys and treats a same-named constraint as present, so
-- the wrong one has to go before the corrected entity can be built.
-- Guarded on confrelid so this is a no-op once the constraint is correct.
DO $$ BEGIN
    IF to_regclass('rooms') IS NOT NULL
       AND to_regclass('dir') IS NOT NULL
       AND EXISTS (
            SELECT 1 FROM pg_constraint
            WHERE conname = 'fk-rooms-parent_id'
              AND conrelid = to_regclass('rooms')
              AND confrelid <> to_regclass('dir')
       ) THEN
        ALTER TABLE rooms DROP CONSTRAINT "fk-rooms-parent_id";
        -- Defensive: anything the old constraint let through cannot be a dir
        -- node, so it is not a valid folder. Reset it instead of letting the
        -- corrected foreign key fail to build.
        UPDATE rooms SET parent_id = NULL
        WHERE parent_id IS NOT NULL
          AND NOT EXISTS (SELECT 1 FROM dir WHERE dir.id = rooms.parent_id);
    END IF;
END $$;

DROP TABLE IF EXISTS pipeline_run;

-- idempotent column adds for phase-2 model changes (sync layer cannot
-- express NOT NULL DEFAULT additions on populated tables).
-- Guarded with to_regclass: on a fresh database the tables do not exist yet
-- (they are created by the registry sync right after, with these columns
-- already included), so the ALTERs must be skipped instead of failing.
DO $$ BEGIN
    IF to_regclass('room_members') IS NOT NULL THEN
        ALTER TABLE room_members ADD COLUMN IF NOT EXISTS role SMALLINT NOT NULL DEFAULT 0;
    END IF;
END $$;
DO $$ BEGIN
    IF to_regclass('issue') IS NOT NULL THEN
        ALTER TABLE issue ADD COLUMN IF NOT EXISTS priority SMALLINT NOT NULL DEFAULT 0;
        ALTER TABLE issue ADD COLUMN IF NOT EXISTS due_at TIMESTAMP WITH TIME ZONE;
    END IF;
END $$;
DO $$ BEGIN
    IF to_regclass('user_access_key') IS NOT NULL THEN
        ALTER TABLE user_access_key ADD COLUMN IF NOT EXISTS expires_at TIMESTAMP WITH TIME ZONE;
        ALTER TABLE user_access_key ADD COLUMN IF NOT EXISTS last_used_at TIMESTAMP WITH TIME ZONE;
    END IF;
END $$;
DO $$ BEGIN
    IF to_regclass('user_preferences') IS NOT NULL THEN
        ALTER TABLE user_preferences ADD COLUMN IF NOT EXISTS board_view_mode VARCHAR NOT NULL DEFAULT 'board';
    END IF;
END $$;
DO $$ BEGIN
    IF to_regclass('chat_message_reminder') IS NOT NULL THEN
        ALTER TABLE chat_message_reminder ADD COLUMN IF NOT EXISTS note TEXT;
    END IF;
END $$;

-- pull_request domain (PR API): the sync layer cannot relax NOT NULL nor add
-- NOT NULL DEFAULT columns on populated tables, so both are applied here.
DO $$ BEGIN
    IF to_regclass('pull_request') IS NOT NULL THEN
        ALTER TABLE pull_request ALTER COLUMN issue_id DROP NOT NULL;
        ALTER TABLE pull_request ADD COLUMN IF NOT EXISTS head_repo_id UUID;
        ALTER TABLE pull_request ADD COLUMN IF NOT EXISTS head_label VARCHAR;
        ALTER TABLE pull_request ADD COLUMN IF NOT EXISTS is_draft BOOLEAN NOT NULL DEFAULT false;
        ALTER TABLE pull_request ADD COLUMN IF NOT EXISTS merge_method SMALLINT NOT NULL DEFAULT 0;
        ALTER TABLE pull_request ADD COLUMN IF NOT EXISTS squash_commit_sha VARCHAR;
        ALTER TABLE pull_request ADD COLUMN IF NOT EXISTS auto_merge BOOLEAN NOT NULL DEFAULT false;
    END IF;
END $$;
DO $$ BEGIN
    IF to_regclass('pull_request_comment') IS NOT NULL THEN
        ALTER TABLE pull_request_comment ALTER COLUMN commit_sha DROP NOT NULL;
        ALTER TABLE pull_request_comment ALTER COLUMN path DROP NOT NULL;
        ALTER TABLE pull_request_comment ADD COLUMN IF NOT EXISTS parent_comment_id UUID;
        ALTER TABLE pull_request_comment ADD COLUMN IF NOT EXISTS original_commit_sha VARCHAR;
        ALTER TABLE pull_request_comment ADD COLUMN IF NOT EXISTS side VARCHAR;
        ALTER TABLE pull_request_comment ADD COLUMN IF NOT EXISTS original_line INTEGER;
        ALTER TABLE pull_request_comment ADD COLUMN IF NOT EXISTS resolved_at TIMESTAMP WITH TIME ZONE;
        ALTER TABLE pull_request_comment ADD COLUMN IF NOT EXISTS resolved_by UUID;
    END IF;
END $$;

DO $$ BEGIN
    IF to_regclass('repo_branch_protection_policy') IS NOT NULL THEN
        ALTER TABLE repo_branch_protection_policy
            ADD COLUMN IF NOT EXISTS required_status_contexts VARCHAR NOT NULL DEFAULT '';
    END IF;
END $$;

-- 2026-10-31: local users table keeps only KenApi-owned settings. This column
-- must exist before SeaORM sync adds it as NOT NULL on an existing table.
ALTER TABLE IF EXISTS users
    ADD COLUMN IF NOT EXISTS local_avatar_url text NOT NULL DEFAULT '';