CREATE SEQUENCE sepa_mandat_id_seq
    INCREMENT BY 1
    NO MAXVALUE
    NO MINVALUE
    CACHE 1;

CREATE TABLE sepa_mandat (
    sepa_mandat_id integer DEFAULT nextval(('"sepa_mandat_id_seq"'::text)::regclass) NOT NULL,
    bp_id integer NOT NULL,
    bank_customer character varying(50) NOT NULL,
    bank_name character varying(50),
    bank_iban character varying(40) NOT NULL,
    bank_bic character varying(40) NOT NULL,
    mandat_ref character varying(40) NOT NULL,
    mandat_signed date NOT NULL,
    mandat_since date NOT NULL,
    mandat_used date,
    mandat_until date
);

INSERT INTO sepa_mandat (bp_id, bank_customer, bank_name, bank_iban, bank_bic, mandat_ref, mandat_signed, mandat_since, mandat_used, mandat_until)
	(SELECT bp_id, bank_customer, bank_name, bank_iban, bank_bic, mandat_ref, mandat_signed, mandat_since, mandat_used, mandat_until FROM bank_account);

ALTER TABLE ONLY sepa_mandat
    ADD CONSTRAINT pk_sepa_mandat PRIMARY KEY (sepa_mandat_id);

ALTER TABLE ONLY sepa_mandat
    ADD CONSTRAINT dateschk1 CHECK (mandat_signed <= mandat_since AND mandat_since <= mandat_until);

ALTER TABLE ONLY sepa_mandat
    ADD CONSTRAINT dateschk2 CHECK (mandat_since <= mandat_until AND mandat_since <= mandat_used AND mandat_used <= mandat_until);

ALTER TABLE ONLY sepa_mandat
    ADD CONSTRAINT fk_bank_acc_reference_business FOREIGN KEY (bp_id) REFERENCES business_partner(bp_id) ON UPDATE RESTRICT ON DELETE RESTRICT;

DROP TABLE bank_account;

ALTER TABLE price_list
	ADD CONSTRAINT price_list_uniq_name UNIQUE (name);
	
CREATE TABLE pricelist_ref (
    bp_id integer NOT NULL,
    price_list character varying(40) NOT NULL
);

INSERT INTO pricelist_ref (bp_id, price_list)
	( SELECT customer, name FROM customer_price_list_mapping, price_list WHERE id = price_list );

ALTER TABLE ONLY pricelist_ref
    ADD CONSTRAINT fk_pricelist_ref_bp FOREIGN KEY (bp_id) REFERENCES business_partner(bp_id) ON UPDATE RESTRICT ON DELETE CASCADE;
	
ALTER TABLE ONLY pricelist_ref
    ADD CONSTRAINT fk_pricelist_ref_pricelist FOREIGN KEY (price_list) REFERENCES price_list(name) ON UPDATE RESTRICT ON DELETE CASCADE;
	
DROP TABLE customer_price_list_mapping;
	
ALTER TABLE contact DROP COLUMN business_contact;

ALTER TABLE contact DROP COLUMN technical_contact;

CREATE TABLE contactrole_ref (
    contact_id integer NOT NULL,
    role character varying(40) NOT NULL
);

ALTER TABLE ONLY contactrole_ref
    ADD CONSTRAINT pk_contactrole_ref PRIMARY KEY (contact_id, role);
    
CREATE TABLE role ( 
    role_name character varying(40) NOT NULL
);

ALTER TABLE ONLY role
    ADD CONSTRAINT pk_role PRIMARY KEY (role_name);

INSERT INTO role VALUES ('billing'), ('operations');

ALTER TABLE ONLY contactrole_ref
    ADD CONSTRAINT fk_contactrole_ref_role FOREIGN KEY (role) REFERENCES role(role_name);

ALTER TABLE ONLY contactrole_ref
    ADD CONSTRAINT fk_contactrole_ref_contact FOREIGN KEY (contact_id) REFERENCES contact(contact_id);
    
INSERT INTO contactrole_ref (contact_id, role) 
	( SELECT contact_id, 'billing' FROM contact );
	
INSERT INTO contactrole_ref (contact_id, role) 
	( SELECT contact_id, 'operations' FROM contact );