BEGIN;

SELECT evergreen.upgrade_deps_block_check('XXXX', :eg_version);

INSERT INTO config.internal_flag (name) VALUES ('ingest.skip_browse_indexing');
INSERT INTO config.internal_flag (name) VALUES ('ingest.skip_search_indexing');
INSERT INTO config.internal_flag (name) VALUES ('ingest.skip_facet_indexing');

CREATE OR REPLACE FUNCTION metabib.reingest_metabib_field_entries( bib_id BIGINT, skip_facet BOOL DEFAULT FALSE, skip_browse BOOL DEFAULT FALSE, skip_search BOOL DEFAULT FALSE ) RETURNS VOID AS $func$
DECLARE
    fclass          RECORD;
    ind_data        metabib.field_entry_template%ROWTYPE;
    mbe_row         metabib.browse_entry%ROWTYPE;
    mbe_id          BIGINT;
    b_skip_facet    BOOL;
    b_skip_browse   BOOL;
    b_skip_search   BOOL;
BEGIN

    SELECT COALESCE(NULLIF(skip_facet, FALSE), EXISTS (SELECT enabled FROM config.internal_flag WHERE name =  'ingest.skip_facet_indexing' AND enabled)) INTO b_skip_facet;
    SELECT COALESCE(NULLIF(skip_browse, FALSE), EXISTS (SELECT enabled FROM config.internal_flag WHERE name =  'ingest.skip_browse_indexing' AND enabled)) INTO b_skip_browse;
    SELECT COALESCE(NULLIF(skip_search, FALSE), EXISTS (SELECT enabled FROM config.internal_flag WHERE name =  'ingest.skip_search_indexing' AND enabled)) INTO b_skip_search;

    PERFORM * FROM config.internal_flag WHERE name = 'ingest.assume_inserts_only' AND enabled;
    IF NOT FOUND THEN
        IF NOT b_skip_search THEN
            FOR fclass IN SELECT * FROM config.metabib_class LOOP
                -- RAISE NOTICE 'Emptying out %', fclass.name;
                EXECUTE $$DELETE FROM metabib.$$ || fclass.name || $$_field_entry WHERE source = $$ || bib_id;
            END LOOP;
        END IF;
        IF NOT b_skip_facet THEN
            DELETE FROM metabib.facet_entry WHERE source = bib_id;
        END IF;
        IF NOT b_skip_browse THEN
            DELETE FROM metabib.browse_entry_def_map WHERE source = bib_id;
        END IF;
    END IF;

    FOR ind_data IN SELECT * FROM biblio.extract_metabib_field_entry( bib_id ) LOOP
        IF ind_data.field < 0 THEN
            ind_data.field = -1 * ind_data.field;
        END IF;

        IF ind_data.facet_field AND NOT b_skip_facet THEN
            INSERT INTO metabib.facet_entry (field, source, value)
                VALUES (ind_data.field, ind_data.source, ind_data.value);
        END IF;

        IF ind_data.browse_field AND NOT b_skip_browse THEN
            -- A caveat about this SELECT: this should take care of replacing
            -- old mbe rows when data changes, but not if normalization (by
            -- which I mean specifically the output of
            -- evergreen.oils_tsearch2()) changes.  It may or may not be
            -- expensive to add a comparison of index_vector to index_vector
            -- to the WHERE clause below.
            SELECT INTO mbe_row * FROM metabib.browse_entry WHERE value = ind_data.value;
            IF FOUND THEN
                mbe_id := mbe_row.id;
            ELSE
                INSERT INTO metabib.browse_entry (value) VALUES
                    (metabib.browse_normalize(ind_data.value, ind_data.field));
                mbe_id := CURRVAL('metabib.browse_entry_id_seq'::REGCLASS);
            END IF;

            INSERT INTO metabib.browse_entry_def_map (entry, def, source)
                VALUES (mbe_id, ind_data.field, ind_data.source);
        END IF;

        IF ind_data.search_field AND NOT b_skip_search THEN
            EXECUTE $$
                INSERT INTO metabib.$$ || ind_data.field_class || $$_field_entry (field, source, value)
                    VALUES ($$ ||
                        quote_literal(ind_data.field) || $$, $$ ||
                        quote_literal(ind_data.source) || $$, $$ ||
                        quote_literal(ind_data.value) ||
                    $$);$$;
        END IF;

    END LOOP;

    IF NOT b_skip_search THEN
        PERFORM metabib.update_combined_index_vectors(bib_id);
    END IF;

    RETURN;
END;
$func$ LANGUAGE PLPGSQL;

COMMIT;
