Question types framework + ShortAnswer & MultiChoice implementations

backend/migrations/20240406023149_intial_schema.sql

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+CREATE TYPE user_role AS ENUM ('User', 'SuperUser');
+
+CREATE TABLE users (
+    id BIGINT PRIMARY KEY,
+    email TEXT NOT NULL UNIQUE,
+    zid TEXT,
+    name TEXT NOT NULL,
+    degree_name TEXT,
+    degree_starting_year INTEGER,
+    role user_role NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+CREATE UNIQUE INDEX IDX_users_email_lower on users ((lower(email)));
+
+CREATE TABLE organisations (
+    id BIGINT PRIMARY KEY,
+    name TEXT NOT NULL UNIQUE,
+    logo TEXT,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+
+CREATE TABLE organisation_admins (
+    id SERIAL PRIMARY KEY,
+    organisation_id BIGINT NOT NULL,
+    user_id BIGINT NOT NULL,
+    CONSTRAINT FK_organisation_admins_organisation
+        FOREIGN KEY(organisation_id)
+            REFERENCES organisations(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_organisation_admins_organisation on organisation_admins (organisation_id);
+
+CREATE TABLE campaigns (
+    id BIGINT PRIMARY KEY,
+    organisation_id BIGINT NOT NULL,
+    name TEXT NOT NULL,
+    cover_image TEXT,
+    description TEXT,
+    starts_at TIMESTAMPTZ NOT NULL,
+    ends_at TIMESTAMPTZ NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    CONSTRAINT FK_campaigns_organisations
+       FOREIGN KEY(organisation_id)
+           REFERENCES organisations(id)
+           ON DELETE CASCADE
+           ON UPDATE CASCADE
+);
+
+CREATE TABLE campaign_roles (
+    id SERIAL PRIMARY KEY,
+    campaign_id BIGINT NOT NULL,
+    name TEXT NOT NULL,
+    description TEXT,
+    min_available INTEGER,
+    max_available INTEGER,
+    finalised BOOLEAN,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    CONSTRAINT FK_campaign_roles_campaign
+        FOREIGN KEY(campaign_id)
+            REFERENCES campaigns(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_campaign_roles_campaign on campaign_roles (campaign_id);
+
+CREATE TYPE question_type AS ENUM ('ShortAnswer', 'MultiChoice', 'MultiSelect', 'DropDown');
+
+CREATE TABLE questions (
+    id BIGINT PRIMARY KEY,
+    title TEXT NOT NULL,
+    description TEXT,
+    required BOOLEAN NOT NULL,
+    question_type question_type NOT NULL,
+    campaign_id BIGINT NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    CONSTRAINT FK_questions_campaigns
+       FOREIGN KEY(campaign_id)
+           REFERENCES campaigns(id)
+           ON DELETE CASCADE
+           ON UPDATE CASCADE
+);
+
+CREATE TABLE multi_option_question_options (
+    id SERIAL PRIMARY KEY,
+    text TEXT NOT NULL,
+    question_id BIGINT NOT NULL,
+    CONSTRAINT FK_multi_option_question_options_questions
+       FOREIGN KEY(question_id)
+           REFERENCES questions(id)
+           ON DELETE CASCADE
+           ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_multi_option_question_options_questions on multi_option_question_options (question_id);
+
+CREATE TYPE application_status AS ENUM ('Pending', 'Rejected', 'Successful');
+
+CREATE TABLE applications (
+    id BIGINT PRIMARY KEY,
+    campaign_id BIGINT NOT NULL,
+    user_id BIGINT NOT NULL,
+    status application_status NOT NULL,
+    private_status application_status NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    CONSTRAINT FK_applications_campaigns
+      FOREIGN KEY(campaign_id)
+          REFERENCES campaigns(id)
+          ON DELETE CASCADE
+          ON UPDATE CASCADE,
+    CONSTRAINT FK_applications_users
+      FOREIGN KEY(user_id)
+          REFERENCES users(id)
+          ON DELETE CASCADE
+          ON UPDATE CASCADE
+);
+
+CREATE TABLE application_roles (
+    id SERIAL PRIMARY KEY,
+    application_id INTEGER NOT NULL,
+    campaign_role_id INTEGER NOT NULL,
+    CONSTRAINT FK_application_roles_applications
+       FOREIGN KEY(application_id)
+           REFERENCES applications(id)
+           ON DELETE CASCADE
+           ON UPDATE CASCADE,
+    CONSTRAINT FK_application_roles_campaign_roles
+       FOREIGN KEY(campaign_role_id)
+           REFERENCES campaign_roles(id)
+           ON DELETE CASCADE
+           ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_application_roles_applications on application_roles (application_id);
+CREATE INDEX IDX_application_roles_campaign_roles on application_roles (campaign_role_id);
+
+CREATE TABLE answers (
+    id SERIAL PRIMARY KEY,
+    application_id BIGINT NOT NULL,
+    question_id BIGINT NOT NULL,
+    CONSTRAINT FK_answers_applications
+        FOREIGN KEY(application_id)
+            REFERENCES applications(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE,
+    CONSTRAINT FK_answers_questions
+        FOREIGN KEY(question_id)
+            REFERENCES questions(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_answers_applications on answers (application_id);
+CREATE INDEX IDX_answers_questions on answers (question_id);
+
+CREATE TABLE short_answer_answers (
+    id SERIAL PRIMARY KEY,
+    text TEXT NOT NULL,
+    answer_id INTEGER NOT NULL,
+    CONSTRAINT FK_short_answer_answers_answers
+      FOREIGN KEY(answer_id)
+          REFERENCES answers(id)
+          ON DELETE CASCADE
+          ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_short_answer_answers_answers on short_answer_answers (answer_id);
+
+CREATE TABLE multi_option_answer_options (
+    id SERIAL PRIMARY KEY,
+    option_id BIGINT NOT NULL,
+    answer_id INTEGER NOT NULL,
+    CONSTRAINT FK_multi_option_answer_options_question_options
+        FOREIGN KEY(option_id)
+            REFERENCES multi_option_question_options(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE,
+    CONSTRAINT FK_multi_option_answer_options_answers
+        FOREIGN KEY(answer_id)
+            REFERENCES answers(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_multi_option_answer_options_question_options on multi_option_answer_options (option_id);
+CREATE INDEX IDX_multi_option_answer_options_answers on multi_option_answer_options (answer_id);
+
+CREATE TABLE application_ratings (
+    id SERIAL PRIMARY KEY,
+    application_id BIGINT NOT NULL,
+    rater_id BIGINT NOT NULL,
+    rating INTEGER NOT NULL,
+    created_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    updated_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+    CONSTRAINT FK_application_ratings_applications
+        FOREIGN KEY(application_id)
+            REFERENCES applications(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE,
+    CONSTRAINT FK_application_ratings_users
+        FOREIGN KEY(rater_id)
+            REFERENCES users(id)
+            ON DELETE CASCADE
+            ON UPDATE CASCADE
+);
+
+CREATE INDEX IDX_application_ratings_applications on application_ratings (application_id);
+CREATE INDEX IDX_application_ratings_users on application_ratings (rater_id);