| 1 |
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| 2 | DROP TABLE IF EXISTS user_favorite_course CASCADE;
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| 3 | DROP TABLE IF EXISTS meeting_email_reminder CASCADE;
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| 4 | DROP TABLE IF EXISTS course_tag CASCADE;
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| 5 | DROP TABLE IF EXISTS user_tag CASCADE;
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| 6 | DROP TABLE IF EXISTS tag_translate CASCADE;
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| 7 | DROP TABLE IF EXISTS tag CASCADE;
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| 8 | DROP TABLE IF EXISTS verification_token CASCADE;
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| 9 | DROP TABLE IF EXISTS user_course_progress CASCADE;
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| 10 | DROP TABLE IF EXISTS review CASCADE;
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| 11 | DROP TABLE IF EXISTS payment CASCADE;
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| 12 | DROP TABLE IF EXISTS enrollment CASCADE;
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| 13 | DROP TABLE IF EXISTS course_lecture_translate CASCADE;
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| 14 | DROP TABLE IF EXISTS course_lecture CASCADE;
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| 15 | DROP TABLE IF EXISTS course_content_translate CASCADE;
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| 16 | DROP TABLE IF EXISTS course_content CASCADE;
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| 17 | DROP TABLE IF EXISTS course_translate CASCADE;
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| 18 | DROP TABLE IF EXISTS course_version CASCADE;
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| 19 | DROP TABLE IF EXISTS course CASCADE;
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| 20 | DROP TABLE IF EXISTS expert CASCADE;
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| 21 | DROP TABLE IF EXISTS "user" CASCADE;
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| 22 | DROP TABLE IF EXISTS account CASCADE;
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| 23 | DROP TABLE IF EXISTS language CASCADE;
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| 24 |
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| 25 | DROP TYPE IF EXISTS login_provider CASCADE;
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| 26 | DROP TYPE IF EXISTS company_size CASCADE;
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| 27 | DROP TYPE IF EXISTS enrollment_status CASCADE;
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| 28 | DROP TYPE IF EXISTS payment_method CASCADE;
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| 29 | DROP TYPE IF EXISTS payment_status CASCADE;
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| 30 | DROP TYPE IF EXISTS difficulty CASCADE;
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| 31 | DROP TYPE IF EXISTS content_type CASCADE;
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| 32 | DROP TYPE IF EXISTS tag_type CASCADE;
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| 33 |
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| 34 | -- -----------------------------------------------------------------------------
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| 35 | -- Enum types
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| 36 | -- -----------------------------------------------------------------------------
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| 37 | CREATE TYPE login_provider AS ENUM ('local', 'google');
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| 38 | CREATE TYPE company_size AS ENUM ('freelance', 'micro', 'small', 'medium', 'mid_market', 'enterprise', 'other');
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| 39 | CREATE TYPE enrollment_status AS ENUM ('pending', 'active', 'completed');
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| 40 | CREATE TYPE payment_method AS ENUM ('card', 'paypal', 'casys');
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| 41 | CREATE TYPE payment_status AS ENUM ('pending', 'completed', 'failed');
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| 42 | CREATE TYPE difficulty AS ENUM ('beginner', 'intermediate', 'advanced', 'expert');
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| 43 | CREATE TYPE content_type AS ENUM ('text', 'file', 'video', 'quiz');
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| 44 | CREATE TYPE tag_type AS ENUM ('skill', 'topic');
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| 45 |
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| 46 | -- -----------------------------------------------------------------------------
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| 47 | -- 22. language
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| 48 | -- -----------------------------------------------------------------------------
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| 49 | CREATE TABLE language (
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| 50 | id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 51 | value varchar(64) NOT NULL,
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| 52 | CONSTRAINT uq_language_value UNIQUE (value)
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| 53 | );
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| 54 |
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| 55 | -- -----------------------------------------------------------------------------
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| 56 | -- 1. account
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| 57 | -- -----------------------------------------------------------------------------
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| 58 | CREATE TABLE account (
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| 59 | id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 60 | email varchar(320) NOT NULL,
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| 61 | password_hash varchar(255) NOT NULL,
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| 62 | name varchar(255) NOT NULL,
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| 63 | CONSTRAINT uq_account_email UNIQUE (email)
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| 64 | );
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| 65 |
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| 66 | -- -----------------------------------------------------------------------------
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| 67 | -- 2. "user"
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| 68 | -- -----------------------------------------------------------------------------
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| 69 | CREATE TABLE "user" (
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| 70 | user_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 71 | name varchar(255) NOT NULL,
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| 72 | email varchar(320) NOT NULL,
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| 73 | password_hash varchar(255) NOT NULL,
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| 74 | login_provider login_provider NOT NULL,
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| 75 | is_verified boolean NOT NULL DEFAULT false,
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| 76 | is_profile_complete boolean NOT NULL DEFAULT false,
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| 77 | has_used_free_consultation boolean NOT NULL DEFAULT false,
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| 78 | work_position varchar(255) NOT NULL,
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| 79 | company_size company_size NOT NULL,
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| 80 | points integer NOT NULL DEFAULT 0,
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| 81 | account_id bigint NOT NULL,
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| 82 | CONSTRAINT uq_user_email UNIQUE (email),
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| 83 | CONSTRAINT uq_user_account_id UNIQUE (account_id),
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| 84 | CONSTRAINT fk_user_account FOREIGN KEY (account_id)
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| 85 | REFERENCES account (id) ON DELETE CASCADE,
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| 86 | CONSTRAINT ck_user_points_non_negative CHECK (points >= 0)
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| 87 | );
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| 88 |
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| 89 | -- -----------------------------------------------------------------------------
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| 90 | -- 3. expert
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| 91 | -- -----------------------------------------------------------------------------
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| 92 | CREATE TABLE expert (
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| 93 | expert_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 94 | account_id bigint NOT NULL,
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| 95 | CONSTRAINT uq_expert_account_id UNIQUE (account_id),
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| 96 | CONSTRAINT fk_expert_account FOREIGN KEY (account_id)
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| 97 | REFERENCES account (id) ON DELETE CASCADE
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| 98 | );
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| 99 |
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| 100 | -- -----------------------------------------------------------------------------
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| 101 | -- 8. course
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| 102 | -- -----------------------------------------------------------------------------
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| 103 | CREATE TABLE course (
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| 104 | course_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 105 | color varchar(32) NOT NULL,
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| 106 | difficulty difficulty NOT NULL,
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| 107 | duration_minutes integer NOT NULL,
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| 108 | image_url varchar(1024) NOT NULL,
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| 109 | price numeric(12,2) NOT NULL,
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| 110 | CONSTRAINT ck_course_duration_positive CHECK (duration_minutes > 0),
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| 111 | CONSTRAINT ck_course_price_non_negative CHECK (price >= 0)
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| 112 | );
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| 113 |
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| 114 | -- -----------------------------------------------------------------------------
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| 115 | -- 7. course_version
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| 116 | -- -----------------------------------------------------------------------------
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| 117 | CREATE TABLE course_version (
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| 118 | course_version_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 119 | version_number integer NOT NULL,
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| 120 | created_at date NOT NULL,
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| 121 | is_active boolean NOT NULL DEFAULT false,
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| 122 | course_id bigint NOT NULL,
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| 123 | CONSTRAINT uq_course_version_number UNIQUE (course_id, version_number),
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| 124 | CONSTRAINT fk_course_version_course FOREIGN KEY (course_id)
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| 125 | REFERENCES course (course_id) ON DELETE CASCADE,
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| 126 | CONSTRAINT ck_course_version_number_positive CHECK (version_number > 0)
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| 127 | );
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| 128 |
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| 129 | -- Only one active version per course.
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| 130 | CREATE UNIQUE INDEX uq_course_version_one_active
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| 131 | ON course_version (course_id) WHERE is_active;
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| 132 |
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| 133 | -- -----------------------------------------------------------------------------
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| 134 | -- 9. course_translate
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| 135 | -- -----------------------------------------------------------------------------
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| 136 | CREATE TABLE course_translate (
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| 137 | course_translate_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 138 | description_short text NOT NULL,
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| 139 | description text NOT NULL,
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| 140 | description_long text NOT NULL,
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| 141 | title_short varchar(255) NOT NULL,
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| 142 | title varchar(512) NOT NULL,
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| 143 | what_will_be_learned text[] NOT NULL,
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| 144 | course_id bigint NOT NULL,
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| 145 | language_id bigint NOT NULL,
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| 146 | CONSTRAINT uq_course_translate UNIQUE (course_id, language_id),
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| 147 | CONSTRAINT fk_course_translate_course FOREIGN KEY (course_id)
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| 148 | REFERENCES course (course_id) ON DELETE CASCADE,
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| 149 | CONSTRAINT fk_course_translate_language FOREIGN KEY (language_id)
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| 150 | REFERENCES language (id) ON DELETE RESTRICT
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| 151 | );
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| 152 |
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| 153 | -- -----------------------------------------------------------------------------
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| 154 | -- 10. course_content
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| 155 | -- -----------------------------------------------------------------------------
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| 156 | CREATE TABLE course_content (
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| 157 | course_content_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 158 | position integer NOT NULL,
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| 159 | course_version_id bigint NOT NULL,
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| 160 | CONSTRAINT uq_course_content_position UNIQUE (course_version_id, position),
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| 161 | CONSTRAINT fk_course_content_version FOREIGN KEY (course_version_id)
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| 162 | REFERENCES course_version (course_version_id) ON DELETE CASCADE,
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| 163 | CONSTRAINT ck_course_content_position_positive CHECK (position > 0)
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| 164 | );
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| 165 |
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| 166 | -- -----------------------------------------------------------------------------
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| 167 | -- 11. course_content_translate
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| 168 | -- -----------------------------------------------------------------------------
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| 169 | CREATE TABLE course_content_translate (
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| 170 | course_content_translate_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 171 | title varchar(512) NOT NULL,
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| 172 | course_content_id bigint NOT NULL,
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| 173 | language_id bigint NOT NULL,
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| 174 | CONSTRAINT uq_course_content_translate UNIQUE (course_content_id, language_id),
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| 175 | CONSTRAINT fk_cct_content FOREIGN KEY (course_content_id)
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| 176 | REFERENCES course_content (course_content_id) ON DELETE CASCADE,
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| 177 | CONSTRAINT fk_cct_language FOREIGN KEY (language_id)
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| 178 | REFERENCES language (id) ON DELETE RESTRICT
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| 179 | );
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| 180 |
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| 181 | -- -----------------------------------------------------------------------------
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| 182 | -- 12. course_lecture
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| 183 | -- -----------------------------------------------------------------------------
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| 184 | CREATE TABLE course_lecture (
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| 185 | course_lecture_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 186 | position integer NOT NULL,
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| 187 | duration_minutes integer NOT NULL,
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| 188 | content_type content_type NOT NULL,
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| 189 | course_content_id bigint NOT NULL,
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| 190 | CONSTRAINT uq_course_lecture_position UNIQUE (course_content_id, position),
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| 191 | CONSTRAINT fk_course_lecture_content FOREIGN KEY (course_content_id)
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| 192 | REFERENCES course_content (course_content_id) ON DELETE CASCADE,
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| 193 | CONSTRAINT ck_course_lecture_position_positive CHECK (position > 0),
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| 194 | CONSTRAINT ck_course_lecture_duration_positive CHECK (duration_minutes > 0)
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| 195 | );
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| 196 |
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| 197 | -- -----------------------------------------------------------------------------
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| 198 | -- 13. course_lecture_translate
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| 199 | -- -----------------------------------------------------------------------------
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| 200 | CREATE TABLE course_lecture_translate (
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| 201 | course_lecture_translate_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 202 | content_file_name varchar(512),
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| 203 | content_text text,
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| 204 | description text NOT NULL,
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| 205 | title varchar(512) NOT NULL,
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| 206 | course_lecture_id bigint NOT NULL,
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| 207 | language_id bigint NOT NULL,
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| 208 | CONSTRAINT uq_course_lecture_translate UNIQUE (course_lecture_id, language_id),
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| 209 | CONSTRAINT fk_clt_lecture FOREIGN KEY (course_lecture_id)
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| 210 | REFERENCES course_lecture (course_lecture_id) ON DELETE CASCADE,
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| 211 | CONSTRAINT fk_clt_language FOREIGN KEY (language_id)
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| 212 | REFERENCES language (id) ON DELETE RESTRICT
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| 213 | );
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| 214 |
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| 215 | -- -----------------------------------------------------------------------------
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| 216 | -- 4. enrollment
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| 217 | -- -----------------------------------------------------------------------------
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| 218 | CREATE TABLE enrollment (
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| 219 | enrollment_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 220 | enrollment_status enrollment_status NOT NULL,
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| 221 | activation_date date,
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| 222 | completion_date date,
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| 223 | purchase_date date NOT NULL,
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| 224 | user_id bigint NOT NULL,
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| 225 | course_version_id bigint NOT NULL,
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| 226 | CONSTRAINT uq_enrollment_user_version UNIQUE (user_id, course_version_id),
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| 227 | CONSTRAINT fk_enrollment_user FOREIGN KEY (user_id)
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| 228 | REFERENCES "user" (user_id) ON DELETE CASCADE,
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| 229 | CONSTRAINT fk_enrollment_course_version FOREIGN KEY (course_version_id)
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| 230 | REFERENCES course_version (course_version_id) ON DELETE RESTRICT,
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| 231 | CONSTRAINT ck_enrollment_status_dates CHECK (
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| 232 | (enrollment_status = 'pending' AND activation_date IS NULL AND completion_date IS NULL)
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| 233 | OR (enrollment_status = 'active' AND activation_date IS NOT NULL AND completion_date IS NULL)
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| 234 | OR (enrollment_status = 'completed' AND activation_date IS NOT NULL AND completion_date IS NOT NULL)
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| 235 | )
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| 236 | );
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| 237 |
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| 238 | -- -----------------------------------------------------------------------------
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| 239 | -- 5. payment
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| 240 | -- -----------------------------------------------------------------------------
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| 241 | CREATE TABLE payment (
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| 242 | payment_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 243 | amount numeric(12,2) NOT NULL,
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| 244 | payment_date date NOT NULL,
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| 245 | payment_method payment_method NOT NULL,
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| 246 | payment_status payment_status NOT NULL,
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| 247 | enrollment_id bigint NOT NULL,
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| 248 | CONSTRAINT fk_payment_enrollment FOREIGN KEY (enrollment_id)
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| 249 | REFERENCES enrollment (enrollment_id) ON DELETE RESTRICT,
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| 250 | CONSTRAINT ck_payment_amount_non_negative CHECK (amount >= 0)
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| 251 | );
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| 252 |
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| 253 | -- -----------------------------------------------------------------------------
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| 254 | -- 6. review
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| 255 | -- -----------------------------------------------------------------------------
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| 256 | CREATE TABLE review (
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| 257 | review_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 258 | rating integer NOT NULL,
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| 259 | comment text NOT NULL,
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| 260 | review_date date NOT NULL,
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| 261 | enrollment_id bigint NOT NULL,
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| 262 | CONSTRAINT uq_review_enrollment UNIQUE (enrollment_id),
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| 263 | CONSTRAINT fk_review_enrollment FOREIGN KEY (enrollment_id)
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| 264 | REFERENCES enrollment (enrollment_id) ON DELETE CASCADE,
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| 265 | CONSTRAINT ck_review_rating_range CHECK (rating BETWEEN 1 AND 5)
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| 266 | );
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| 267 |
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| 268 | -- -----------------------------------------------------------------------------
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| 269 | -- 14. user_course_progress
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| 270 | -- -----------------------------------------------------------------------------
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| 271 | CREATE TABLE user_course_progress (
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| 272 | user_course_progress_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 273 | is_completed boolean NOT NULL DEFAULT false,
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| 274 | completed_at timestamp,
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| 275 | course_lecture_id bigint NOT NULL,
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| 276 | enrollment_id bigint NOT NULL,
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| 277 | CONSTRAINT uq_ucp UNIQUE (enrollment_id, course_lecture_id),
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| 278 | CONSTRAINT fk_ucp_lecture FOREIGN KEY (course_lecture_id)
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| 279 | REFERENCES course_lecture (course_lecture_id) ON DELETE CASCADE,
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| 280 | CONSTRAINT fk_ucp_enrollment FOREIGN KEY (enrollment_id)
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| 281 | REFERENCES enrollment (enrollment_id) ON DELETE CASCADE,
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| 282 | CONSTRAINT ck_ucp_completed CHECK (
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| 283 | (is_completed AND completed_at IS NOT NULL) OR (NOT is_completed AND completed_at IS NULL)
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| 284 | )
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| 285 | );
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| 286 |
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| 287 | -- -----------------------------------------------------------------------------
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| 288 | -- 15. verification_token
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| 289 | -- -----------------------------------------------------------------------------
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| 290 | CREATE TABLE verification_token (
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| 291 | verification_token_uuid uuid PRIMARY KEY DEFAULT gen_random_uuid(),
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| 292 | expires_at timestamp NOT NULL,
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| 293 | created_at timestamp NOT NULL DEFAULT now(),
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| 294 | user_id bigint NOT NULL,
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| 295 | CONSTRAINT fk_verification_token_user FOREIGN KEY (user_id)
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| 296 | REFERENCES "user" (user_id) ON DELETE CASCADE,
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| 297 | CONSTRAINT ck_verification_token_expiry CHECK (expires_at > created_at)
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| 298 | );
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| 299 |
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| 300 | -- -----------------------------------------------------------------------------
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| 301 | -- 16. tag
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| 302 | -- -----------------------------------------------------------------------------
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| 303 | CREATE TABLE tag (
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| 304 | tag_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 305 | tag_type tag_type NOT NULL
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| 306 | );
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| 307 |
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| 308 | -- -----------------------------------------------------------------------------
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| 309 | -- 17. tag_translate
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| 310 | -- -----------------------------------------------------------------------------
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| 311 | CREATE TABLE tag_translate (
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| 312 | tag_translate_id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
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| 313 | value varchar(255) NOT NULL,
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| 314 | tag_id bigint NOT NULL,
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| 315 | language_id bigint NOT NULL,
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| 316 | CONSTRAINT uq_tag_translate UNIQUE (tag_id, language_id),
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| 317 | CONSTRAINT fk_tag_translate_tag FOREIGN KEY (tag_id)
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| 318 | REFERENCES tag (tag_id) ON DELETE CASCADE,
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| 319 | CONSTRAINT fk_tag_translate_language FOREIGN KEY (language_id)
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| 320 | REFERENCES language (id) ON DELETE RESTRICT
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| 321 | );
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| 322 |
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| 323 | -- -----------------------------------------------------------------------------
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| 324 | -- 18. user_tag
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| 325 | -- -----------------------------------------------------------------------------
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| 326 | CREATE TABLE user_tag (
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| 327 | tag_id bigint NOT NULL,
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| 328 | user_id bigint NOT NULL,
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| 329 | CONSTRAINT pk_user_tag PRIMARY KEY (user_id, tag_id),
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| 330 | CONSTRAINT fk_user_tag_tag FOREIGN KEY (tag_id)
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| 331 | REFERENCES tag (tag_id) ON DELETE CASCADE,
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| 332 | CONSTRAINT fk_user_tag_user FOREIGN KEY (user_id)
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| 333 | REFERENCES "user" (user_id) ON DELETE CASCADE
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| 334 | );
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| 335 |
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| 336 | -- -----------------------------------------------------------------------------
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| 337 | -- 19. course_tag
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| 338 | -- -----------------------------------------------------------------------------
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| 339 | CREATE TABLE course_tag (
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| 340 | tag_id bigint NOT NULL,
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| 341 | course_id bigint NOT NULL,
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| 342 | CONSTRAINT pk_course_tag PRIMARY KEY (course_id, tag_id),
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| 343 | CONSTRAINT fk_course_tag_tag FOREIGN KEY (tag_id)
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| 344 | REFERENCES tag (tag_id) ON DELETE CASCADE,
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| 345 | CONSTRAINT fk_course_tag_course FOREIGN KEY (course_id)
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| 346 | REFERENCES course (course_id) ON DELETE CASCADE
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| 347 | );
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| 348 |
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| 349 | -- -----------------------------------------------------------------------------
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| 350 | -- 20. meeting_email_reminder
|
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| 351 | -- -----------------------------------------------------------------------------
|
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| 352 | CREATE TABLE meeting_email_reminder (
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| 353 | id bigint GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
|
|---|
| 354 | meeting_at timestamp NOT NULL,
|
|---|
| 355 | scheduled_at timestamp NOT NULL,
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| 356 | sent boolean NOT NULL DEFAULT false,
|
|---|
| 357 | meeting_link varchar(1024) NOT NULL,
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|---|
| 358 | user_id bigint NOT NULL,
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| 359 | CONSTRAINT fk_mer_user FOREIGN KEY (user_id)
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| 360 | REFERENCES "user" (user_id) ON DELETE CASCADE
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| 361 | );
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| 362 |
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| 363 | -- -----------------------------------------------------------------------------
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| 364 | -- 21. user_favorite_course
|
|---|
| 365 | -- -----------------------------------------------------------------------------
|
|---|
| 366 | CREATE TABLE user_favorite_course (
|
|---|
| 367 | user_id bigint NOT NULL,
|
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| 368 | course_id bigint NOT NULL,
|
|---|
| 369 | CONSTRAINT pk_user_favorite_course PRIMARY KEY (user_id, course_id),
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|---|
| 370 | CONSTRAINT fk_ufc_user FOREIGN KEY (user_id)
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| 371 | REFERENCES "user" (user_id) ON DELETE CASCADE,
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| 372 | CONSTRAINT fk_ufc_course FOREIGN KEY (course_id)
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| 373 | REFERENCES course (course_id) ON DELETE CASCADE
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| 374 | ); |
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