-- This script was generated by the ERD tool in pgAdmin 4.
-- Please log an issue at https://github.com/pgadmin-org/pgadmin4/issues/new/choose if you find any bugs, including reproduction steps.
BEGIN;
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

CREATE TABLE IF NOT EXISTS public.alt_subject
(
    id uuid NOT NULL DEFAULT uuid_generate_v4(),
    name character varying(255) COLLATE pg_catalog."default" NOT NULL,
    subject_id uuid NOT NULL,
    CONSTRAINT alt_subject_pkey PRIMARY KEY (id),
    CONSTRAINT alt_subject_name_key UNIQUE (name)
);

CREATE TABLE IF NOT EXISTS public.entries
(
    id uuid NOT NULL DEFAULT uuid_generate_v4(),
    subject_id uuid NOT NULL,
    title text COLLATE pg_catalog."default",
    info_entry text COLLATE pg_catalog."default",
    paragraph text COLLATE pg_catalog."default",
    time_published timestamp without time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
    filepath text COLLATE pg_catalog."default",
    CONSTRAINT entries_pkey PRIMARY KEY (id)
);

CREATE TABLE IF NOT EXISTS public.subjects
(
    id uuid NOT NULL DEFAULT uuid_generate_v4(),
    code bigint,
    name character varying(255) COLLATE pg_catalog."default" NOT NULL,
    CONSTRAINT subjects_pkey PRIMARY KEY (id)
);

CREATE TABLE IF NOT EXISTS public."user-subject"
(
    user_id uuid NOT NULL,
    subject_id uuid NOT NULL,
    CONSTRAINT "user-subject_pkey" PRIMARY KEY (user_id, subject_id)
);

CREATE TABLE IF NOT EXISTS public.users
(
    id uuid NOT NULL DEFAULT uuid_generate_v4(),
    email character varying(255) COLLATE pg_catalog."default" NOT NULL,
    password character varying(255) COLLATE pg_catalog."default" NOT NULL,
    reg_time timestamp without time zone NOT NULL DEFAULT CURRENT_TIMESTAMP,
    CONSTRAINT users_pkey PRIMARY KEY (id),
    CONSTRAINT unique_email UNIQUE (email)
);

ALTER TABLE IF EXISTS public.alt_subject
    ADD CONSTRAINT alt_subject_subject_id_fkey FOREIGN KEY (subject_id)
    REFERENCES public.subjects (id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE CASCADE;


ALTER TABLE IF EXISTS public.entries
    ADD CONSTRAINT subject_for_key FOREIGN KEY (subject_id)
    REFERENCES public.subjects (id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE NO ACTION;


ALTER TABLE IF EXISTS public."user-subject"
    ADD CONSTRAINT for_subject FOREIGN KEY (subject_id)
    REFERENCES public.subjects (id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE CASCADE;


ALTER TABLE IF EXISTS public."user-subject"
    ADD CONSTRAINT for_user FOREIGN KEY (user_id)
    REFERENCES public.users (id) MATCH SIMPLE
    ON UPDATE NO ACTION
    ON DELETE CASCADE;

END;