-- This script was generated by the ERD tool in pgAdmin 4.
-- Please log an issue at https://redmine.postgresql.org/projects/pgadmin4/issues/new if you find any bugs, including reproduction steps.
BEGIN;

DROP TABLE IF EXISTS public."Tech_Dish";
DROP TABLE IF EXISTS public."Source";
DROP TABLE IF EXISTS public."Link";
DROP TABLE IF EXISTS public."Dish";
DROP TABLE IF EXISTS public."Cathegory";

DROP TABLE IF EXISTS public."Tech";

DROP TABLE IF EXISTS public."Conversion";
DROP TABLE IF EXISTS public."Alternative Name";
DROP TABLE IF EXISTS public."Ingredients";
DROP TABLE IF EXISTS public."Methods";


CREATE TABLE IF NOT EXISTS public."Cathegory"
(
    cath_id serial,
    cath_name character varying(20) NOT NULL,
    root_id integer,
    PRIMARY KEY (cath_id),
    CONSTRAINT "Name" UNIQUE (cath_name)
);



CREATE TABLE IF NOT EXISTS public."Dish"
(
    dish_id serial,
    cath_id integer NOT NULL,
    name character varying(20) NOT NULL,
    cook_time interval NOT NULL,
    manual text NOT NULL,
    PRIMARY KEY (dish_id),
    CONSTRAINT "Name Dish" UNIQUE (name)
);



CREATE TABLE IF NOT EXISTS public."Link"
(
    dish_id integer,
    ingr_id integer,
    method_id integer NOT NULL,
    amount numeric(10) NOT NULL,
    PRIMARY KEY (dish_id, ingr_id)
);



CREATE TABLE IF NOT EXISTS public."Ingredients"
(
    ingr_id serial,
    ingr_name character varying(20) NOT NULL,
    ingr_descr text NOT NULL,
    PRIMARY KEY (ingr_id),
    CONSTRAINT "Inrg Name" UNIQUE (ingr_name)
);



CREATE TABLE IF NOT EXISTS public."Conversion"
(
    ingr_id integer,
    method1_id integer,
    method2_id integer,
    transit numeric NOT NULL,
    PRIMARY KEY (ingr_id, method1_id, method2_id)
);



CREATE TABLE IF NOT EXISTS public."Methods"
(
    method_id serial,
    method_name character varying(20) NOT NULL,
    standart boolean NOT NULL,
    PRIMARY KEY (method_id),
    UNIQUE (method_name)
);



CREATE TABLE IF NOT EXISTS public."Source"
(
    dish_id integer,
    picture serial NOT NULL,
    PRIMARY KEY (dish_id)
);


CREATE TABLE IF NOT EXISTS public."Tech"
(
    tech_id serial,
    tech_name character varying(20) NOT NULL,
    PRIMARY KEY (tech_id),
    CONSTRAINT "Name Tech" UNIQUE (tech_name)
);



CREATE TABLE IF NOT EXISTS public."Tech_Dish"
(
    "Tech_tech_id" integer,
    "Dish_dish_id" integer,
    PRIMARY KEY ("Tech_tech_id", "Dish_dish_id")
);



CREATE TABLE IF NOT EXISTS public."Alternative Name"
(
    ingr_id integer,
    alt_name character varying(20) NOT NULL,
    PRIMARY KEY (ingr_id),
    CONSTRAINT "Alt Name" UNIQUE (alt_name)
);

ALTER TABLE IF EXISTS public."Cathegory"
    ADD FOREIGN KEY (root_id)
    REFERENCES public."Cathegory" (cath_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Dish"
    ADD FOREIGN KEY (cath_id)
    REFERENCES public."Cathegory" (cath_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Link"
    ADD FOREIGN KEY (ingr_id)
    REFERENCES public."Ingredients" (ingr_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Link"
    ADD FOREIGN KEY (dish_id)
    REFERENCES public."Dish" (dish_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Conversion"
    ADD FOREIGN KEY (method1_id)
    REFERENCES public."Methods" (method_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Conversion"
    ADD FOREIGN KEY (ingr_id)
    REFERENCES public."Ingredients" (ingr_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Conversion"
    ADD FOREIGN KEY (method2_id)
    REFERENCES public."Methods" (method_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Source"
    ADD FOREIGN KEY (dish_id)
    REFERENCES public."Dish" (dish_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Tech_Dish"
    ADD FOREIGN KEY ("Tech_tech_id")
    REFERENCES public."Tech" (tech_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Tech_Dish"
    ADD FOREIGN KEY ("Dish_dish_id")
    REFERENCES public."Dish" (dish_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;


ALTER TABLE IF EXISTS public."Alternative Name"
    ADD FOREIGN KEY (ingr_id)
    REFERENCES public."Ingredients" (ingr_id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION
    NOT VALID;

END;