DROP SCHEMA IF EXISTS trekr CASCADE;

CREATE SCHEMA trekr;

SET search_path TO trekr;
DROP TABLE IF EXISTS TASK_DAILY_COMPLETION;
DROP TABLE IF EXISTS DAILY_COMPLETION;
DROP TABLE IF EXISTS TASKS;
DROP TABLE IF EXISTS CUSTOM_TRACKING_CATEGORIES;
DROP TABLE IF EXISTS ASSETS;
DROP TABLE IF EXISTS INVESTOR_USERS;
DROP TABLE IF EXISTS DAILY_INTAKES;
DROP TABLE IF EXISTS WEIGHT_USERS;
DROP TABLE IF EXISTS TRAINING_SESSIONS;
DROP TABLE IF EXISTS TRAINING_USERS;
DROP TABLE IF EXISTS INCOMES;
DROP TABLE IF EXISTS FINANCE_USERS;
DROP TABLE IF EXISTS DISCIPLINE_USERS;
DROP TABLE IF EXISTS USERS;

CREATE TABLE USERS (
    user_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    email TEXT NOT NULL UNIQUE,
    username TEXT NOT NULL UNIQUE,
    password TEXT NOT NULL
);

CREATE TABLE FINANCE_USERS (
    user_id BIGINT PRIMARY KEY
        REFERENCES USERS(user_id) ON DELETE CASCADE,
    spending_budget NUMERIC,
    saving_budget NUMERIC,
    investing_budget NUMERIC,
    donation_budget NUMERIC,
    credit NUMERIC
);

CREATE TABLE INCOMES (
    income_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    user_id BIGINT
        REFERENCES FINANCE_USERS(user_id) ON DELETE CASCADE,
    date DATE NOT NULL,
    amount NUMERIC NOT NULL
);

CREATE TABLE TRAINING_USERS (
    user_id BIGINT PRIMARY KEY
        REFERENCES USERS(user_id) ON DELETE CASCADE,
    gender TEXT,
    age INTEGER,
    weight NUMERIC
);

CREATE TABLE WEIGHT_USERS (
    user_id BIGINT PRIMARY KEY
        REFERENCES USERS(user_id) ON DELETE CASCADE,
    weight NUMERIC NOT NULL,
    height NUMERIC NOT NULL,
    goal_weight NUMERIC NOT NULL,
    goal_calories NUMERIC NOT NULL
);

CREATE TABLE DAILY_INTAKES (
    daily_intake_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    user_id BIGINT
        REFERENCES WEIGHT_USERS(user_id) ON DELETE CASCADE,
    calories NUMERIC NOT NULL,
    date DATE NOT NULL,

    CONSTRAINT daily_intakes_unique_user_date UNIQUE (user_id, date)
);

CREATE TABLE TRAINING_SESSIONS (
    training_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    training_user_id BIGINT
        REFERENCES TRAINING_USERS(user_id) ON DELETE CASCADE,
    duration NUMERIC,
    calories NUMERIC,
    date DATE,
    type TEXT
);

CREATE TABLE DISCIPLINE_USERS (
    user_id BIGINT PRIMARY KEY
        REFERENCES USERS(user_id) ON DELETE CASCADE
);

CREATE TABLE CUSTOM_TRACKING_CATEGORIES (
    custom_tracking_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    user_id BIGINT
        REFERENCES USERS(user_id) ON DELETE CASCADE,
    name TEXT NOT NULL
);

CREATE TABLE TASKS (
    task_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    name TEXT NOT NULL,
    is_finished BOOLEAN NOT NULL DEFAULT FALSE,

    discipline_user_id BIGINT
        REFERENCES DISCIPLINE_USERS(user_id) ON DELETE CASCADE,

    custom_tracking_id BIGINT
        REFERENCES CUSTOM_TRACKING_CATEGORIES(custom_tracking_id)
        ON DELETE CASCADE,

    CONSTRAINT task_belongs_to_exactly_one_category
        CHECK (
            (discipline_user_id IS NOT NULL AND custom_tracking_id IS NULL)
            OR
            (discipline_user_id IS NULL AND custom_tracking_id IS NOT NULL)
        )
);

CREATE TABLE DAILY_COMPLETION (
    daily_completion_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    user_id BIGINT
        REFERENCES USERS(user_id) ON DELETE CASCADE,
    date DATE,
    procent NUMERIC
);

CREATE TABLE TASK_DAILY_COMPLETION (
    task_id BIGINT
        REFERENCES TASKS(task_id) ON DELETE CASCADE,
    daily_completion_id BIGINT
        REFERENCES DAILY_COMPLETION(daily_completion_id) ON DELETE CASCADE,

    CONSTRAINT task_daily_completion_pk
        PRIMARY KEY (task_id, daily_completion_id)
);

CREATE TABLE INVESTOR_USERS (
    user_id BIGINT PRIMARY KEY
        REFERENCES USERS(user_id) ON DELETE CASCADE
);

CREATE TABLE ASSETS (
    asset_id BIGINT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
    user_id BIGINT
        REFERENCES INVESTOR_USERS(user_id) ON DELETE CASCADE,
    ticker_symbol TEXT NOT NULL,
    buy_price NUMERIC,
    buy_date DATE,
    quantity NUMERIC
);