path: root/sql/modules/Voucher.sql

CREATE OR REPLACE FUNCTION voucher_get_batch (in_batch_id integer) 
RETURNS batch AS 
$$
DECLARE
    batch_out batch%ROWTYPE;
BEGIN
    SELECT * INTO batch_out FROM batch b WHERE b.id = in_batch_id;
    RETURN batch_out;
END;
$$ language plpgsql;


CREATE OR REPLACE FUNCTION batch_update (in_batch text, in_login varchar, in_entered date,
    in_batch_number text, in_description text, in_id integer) 
RETURNS integer AS
$$
BEGIN
    UPDATE batch
    SET batch_number = in_batch_number,
        description = in_description,
        entered = in_entered
    WHERE id = in_id;

    IF FOUND THEN 
        RETURN in_id;
    END IF;

    INSERT INTO batch (batch, employee_id, batch_number, description, 
        entered)
    VALUES (in_batch, (SELECT id FROM employees WHERE login = in_login),
        in_batch_number, description);

    RETURN currval('id');
END;
$$ LANGUAGE PLPGSQL;

CREATE TYPE voucher_list AS (
    id int,
    reference text,
    description text,
    batch_id int,
    transaction_id integer,
    amount numeric,
    transaction_date date,
        batch_class text
);

CREATE OR REPLACE FUNCTION voucher_list (in_batch_id integer)
RETURNS SETOF voucher_list AS
$$
declare voucher_item record;
BEGIN
        FOR voucher_item IN
        SELECT v.id, a.invnumber, e.name, v.batch_id, v.trans_id, 
            a.amount, a.transdate, 'Payable'
        FROM voucher v
        JOIN ap a ON (v.trans_id = a.id)
        JOIN entity e ON (a.entity_id = e.id)
        WHERE v.batch_id = in_batch_id 
            AND v.batch_class = (select id from batch_class 
                    WHERE class = 'ap')
        UNION
        SELECT v.id, a.invnumber, e.name, v.batch_id, v.trans_id, 
            a.amount, a.transdate, 'Receivable'
        FROM voucher v
        JOIN ar a ON (v.trans_id = a.id)
        JOIN entity e ON (a.entity_id = e.id)
        WHERE v.batch_id = in_batch_id 
            AND v.batch_class = (select id from batch_class 
                    WHERE class = 'ar')
        UNION
        -- TODO:  Add the class labels to the class table.
        SELECT v.id, a.source,
            cr.meta_number || '--'  || co.legal_name , 
            v.batch_id, v.trans_id, 
            CASE WHEN bc.class LIKE 'payment%' THEN a.amount * -1
                 ELSE a.amount  END, a.transdate, 
            CASE WHEN bc.class = 'payment' THEN 'Payment'
                 WHEN bc.class = 'payment_reversal' 
                 THEN 'Payment Reversal'
            END
        FROM voucher v
        JOIN acc_trans a ON (v.trans_id = a.trans_id)
                JOIN batch_class bc ON (bc.id = v.batch_class)
        JOIN chart c ON (a.chart_id = c.id)
        JOIN ap ON (ap.id = a.trans_id)
        JOIN entity_credit_account cr 
            ON (ap.entity_credit_account = cr.id)
        JOIN company co ON (cr.entity_id = co.entity_id)
        WHERE v.batch_id = in_batch_id 
            AND a.voucher_id = v.id
            AND (bc.class like 'payment%' AND c.link = 'AP')
        UNION
        SELECT v.id, a.source, a.memo, v.batch_id, v.trans_id, 
            CASE WHEN bc.class LIKE 'payment%' THEN a.amount * -1
                 ELSE a.amount  END, a.transdate, 
            CASE WHEN bc.class = 'receipt' THEN 'Receipt'
                 WHEN bc.class = 'receipt_reversal' 
                 THEN 'Receipt Reversal'
            END
        FROM voucher v
        JOIN acc_trans a ON (v.trans_id = a.trans_id)
                JOIN batch_class bc ON (bc.id = v.batch_class)
        JOIN chart c ON (a.chart_id = c.id)
        JOIN ar ON (ar.id = a.trans_id)
        JOIN entity_credit_account cr 
            ON (ar.entity_credit_account = cr.id)
        JOIN company co ON (cr.entity_id = co.entity_id)
        WHERE v.batch_id = in_batch_id 
            AND a.voucher_id = v.id
            AND (bc.class like 'receipt%' AND c.link = 'AR')
        UNION
        SELECT v.id, g.reference, g.description, v.batch_id, v.trans_id,
            sum(a.amount), g.transdate, 'gl'
        FROM voucher v
        JOIN gl g ON (g.id = v.trans_id)
        JOIN acc_trans a ON (v.trans_id = a.trans_id)
        WHERE a.amount > 0
            AND v.batch_id = in_batch_id
            AND v.batch_class IN (select id from batch_class 
                    where class = 'gl')
        GROUP BY v.id, g.reference, g.description, v.batch_id, 
            v.trans_id, g.transdate
        ORDER BY 7, 1
    LOOP
        RETURN NEXT voucher_item;
    END LOOP;
END;
$$ language plpgsql;

CREATE TYPE batch_list_item AS (
    id integer,
    batch_class text,
    control_code text,
    description text,
    created_by text,
    created_on date,
    transaction_total numeric,
    payment_total numeric
);

CREATE OR REPLACE FUNCTION 
batch_search(in_class_id int, in_description text, in_created_by_eid int, 
    in_amount_gt numeric, 
    in_amount_lt numeric, in_approved bool) 
RETURNS SETOF batch_list_item AS
$$
DECLARE out_value batch_list_item;
BEGIN
    FOR out_value IN
        SELECT b.id, c.class, b.control_code, b.description, u.username,
            b.created_on,
            sum(
                CASE WHEN vc.id = 5 AND al.amount > 0 
                     THEN al.amount
                     WHEN vc.id  = 1
                     THEN ap.amount 
                     WHEN vc.id = 2
                                     THEN ap.amount
                     ELSE 0
                                END) AS transaction_total,
            sum(
                CASE WHEN alc.link = 'AR' AND vc.id IN (6, 7)
                     THEN al.amount
                     WHEN alc.link = 'AP' AND vc.id IN (3, 4)
                     THEN al.amount * -1
                     ELSE 0
                END
               ) AS payment_total
        FROM batch b
        JOIN batch_class c ON (b.batch_class_id = c.id)
        LEFT JOIN users u ON (u.entity_id = b.created_by)
        JOIN voucher v ON (v.batch_id = b.id)
        JOIN batch_class vc ON (v.batch_class = vc.id)
        LEFT JOIN ar ON (vc.id = 2 AND v.trans_id = ar.id)
        LEFT JOIN ap ON (vc.id = 1 AND v.trans_id = ap.id)
        LEFT JOIN acc_trans al ON 
            ((vc.id = 5 AND v.trans_id = al.trans_id) OR
                (vc.id IN (3, 4, 6, 7) 
                    AND al.voucher_id = v.id))
        LEFT JOIN chart alc ON (al.chart_id = alc.id)
        WHERE (c.id = in_class_id OR in_class_id IS NULL) AND 
            (b.description LIKE 
                '%' || in_description || '%' OR
                in_description IS NULL) AND
            (in_created_by_eid = b.created_by OR
                in_created_by_eid IS NULL) AND
            ((in_approved = false OR in_approved IS NULL AND
                approved_on IS NULL) OR
                (in_approved = true AND approved_on IS NOT NULL)
            )
        GROUP BY b.id, c.class, b.description, u.username, b.created_on,
            b.control_code
        HAVING  
            (in_amount_gt IS NULL OR
            sum(coalesce(ar.amount - ar.paid, ap.amount - ap.paid, 
                al.amount)) 
            >= in_amount_gt) 
            AND 
            (in_amount_lt IS NULL OR
            sum(coalesce(ar.amount - ar.paid, ap.amount - ap.paid, 
                al.amount))
            <= in_amount_lt)
        
    LOOP
        RETURN NEXT out_value;
    END LOOP;
END;
$$ LANGUAGE PLPGSQL;



CREATE OR REPLACE FUNCTION batch_post(in_batch_id INTEGER)
returns date AS
$$
BEGIN
    UPDATE ar SET approved = true 
    WHERE id IN (select trans_id FROM voucher 
        WHERE batch_id = in_batch_id
        AND batch_class = 2);
    
    UPDATE ap SET approved = true 
    WHERE id IN (select trans_id FROM voucher 
        WHERE batch_id = in_batch_id
        AND batch_class = 1);

    UPDATE gl SET approved = true 
    WHERE id IN (select trans_id FROM voucher 
        WHERE batch_id = in_batch_id
        AND batch_class = 5);

    UPDATE acc_trans SET approved = true 
    WHERE trans_id IN (select trans_id FROM voucher 
        WHERE batch_id = in_batch_id
        AND batch_class IN (3, 4, 7, 8));

    UPDATE batch 
    SET approved_on = now(),
        approved_by = (select entity_id FROM users 
            WHERE username = SESSION_USER)
    WHERE id = in_batch_id;

    RETURN now()::date;
END;
$$ LANGUAGE PLPGSQL;

CREATE OR REPLACE FUNCTION batch_list_classes() RETURNS SETOF batch_class AS
$$
DECLARE out_val record;
BEGIN
    FOR out_val IN select * from batch_class
    LOOP
        return next out_val;
    END LOOP;
END;
$$ language plpgsql;

CREATE OR REPLACE FUNCTION batch_get_users() RETURNS SETOF users AS
$$
DECLARE out_record users%ROWTYPE;
BEGIN
    FOR out_record IN
        SELECT * from users WHERE entity_id IN (select created_by from batch)
    LOOP
        RETURN NEXT out_record;
    END LOOP;
END;
$$ LANGUAGE PLPGSQL;

CREATE OR REPLACE FUNCTION batch_create(
in_batch_number text, in_description text, in_batch_class text) RETURNS int AS
$$
BEGIN
    INSERT INTO 
        batch (batch_class_id, description, control_code, created_by)
    VALUES ((SELECT id FROM batch_class WHERE class = in_batch_class),
        in_description, in_batch_number, 
            (select entity_id FROM users WHERE username = session_user));

    return currval('batch_id_seq');
END;    
$$ LANGUAGE PLPGSQL;

CREATE OR REPLACE FUNCTION batch_delete(in_batch_id int) RETURNS int AS
$$
DECLARE 
    t_transaction_ids int[];
BEGIN
    -- Adjust AR/AP tables for payment and payment reversal vouchers
    -- voucher_id is only set in acc_trans on payment/receipt vouchers and
    -- their reversals. -CT
    update ar set paid = amount + 
        (select sum(amount) from acc_trans 
        join chart ON (acc_trans.chart_id = chart.id)
        where link = 'AR' AND trans_id = ar.id
            AND (voucher_id IS NULL OR voucher_id NOT IN 
                (select id from voucher 
                WHERE batch_id = in_batch_id))) 
    where id in (select trans_id from acc_trans where voucher_id IN 
        (select id from voucher where batch_id = in_batch_id));

    update ap set paid = amount - (select sum(amount) from acc_trans 
        join chart ON (acc_trans.chart_id = chart.id)
        where link = 'AP' AND trans_id = ap.id
            AND (voucher_id IS NULL OR voucher_id NOT IN 
                (select id from voucher 
                WHERE batch_id = in_batch_id))) 
    where id in (select trans_id from acc_trans where voucher_id IN 
        (select id from voucher where batch_id = in_batch_id));

    DELETE FROM acc_trans WHERE voucher_id IN 
        (select id FROM voucher where batch_id = in_batch_id);

    -- The rest of this function involves the deletion of actual
    -- transactions, vouchers, and batches, and jobs which are in progress.
    -- -CT
    SELECT as_array(trans_id) INTO t_transaction_ids
    FROM voucher WHERE batch_id = in_batch_id AND batch_class IN (1, 2, 5);

    DELETE FROM acc_trans WHERE trans_id = ANY(t_transaction_ids);
    DELETE FROM ap WHERE id = ANY(t_transaction_ids);
    DELETE FROM gl WHERE id = ANY(t_transaction_ids);
    DELETE FROM voucher WHERE batch_id = in_batch_id;
    DELETE FROM payments_queue WHERE batch_id = in_batch_id;
    DELETE FROM pending_job WHERE batch_id = in_batch_id;
    DELETE FROM batch WHERE id = in_batch_id;
    DELETE FROM transactions WHERE id = ANY(t_transaction_ids);

    RETURN 1;
END;
$$ language plpgsql;

CREATE OR REPLACE FUNCTION voucher__delete(in_voucher_id int)
RETURNS int AS
$$
DECLARE 
    voucher_row RECORD;
BEGIN
    SELECT * INTO voucher_row FROM voucher WHERE id = in_voucher_id;
    IF voucher_row.batch_class IN (1, 2, 5) THEN
        DELETE from acc_trans WHERE trans_id = voucher_row.trans_id;
        DELETE FROM ar WHERE id = voucher_row.trans_id;
        DELETE FROM ap WHERE id = voucher_row.trans_id;
        DELETE FROM gl WHERE id = voucher_row.trans_id;
        DELETE FROM voucher WHERE id = voucher_row.id;
        DELETE FROM transactions WHERE id = voucher_row.trans_id;
    ELSE 
        update ar set paid = amount + 
            (select sum(amount) from acc_trans 
            join chart ON (acc_trans.chart_id = chart.id)
            where link = 'AR' AND trans_id = ar.id
                AND (voucher_id IS NULL 
                OR voucher_id <> voucher_row.id))
        where id in (select trans_id from acc_trans 
                where voucher_id = voucher_row.id);

        update ap set paid = amount - (select sum(amount) from acc_trans 
            join chart ON (acc_trans.chart_id = chart.id)
            where link = 'AP' AND trans_id = ap.id
                AND (voucher_id IS NULL 
                OR voucher_id <> voucher_row.id))
        where id in (select trans_id from acc_trans 
                where voucher_id = voucher_row.id);

        DELETE FROM acc_trans where voucher_id = voucher_row.id;
    END IF;
    RETURN 1;
END;
$$ LANGUAGE PLPGSQL;