-- 042_verification_check.sql
-- Annexure E - Employment Verification Check Form as its own table
-- (backend/verification_check/models.py, VerificationCheck). One row per referee
-- call, so a candidate can have several. recruiter_id and candidate_id both
-- point at users.id (recruiters and candidates are users in this system);
-- created_by is the logged-in user who filled the form.
--
-- The table name is mixed case at the user's request, so it must stay quoted
-- ("Verification_Check") in any raw SQL. Index / FK names follow the db_setup
-- NAMING_CONVENTION so a dev DB that autogenerated first is a no-op.
--
-- Idempotent, applied at startup by alembic_setup.run_manual_sql(). Needed
-- because prod boots with DB_AUTOGENERATE=false and never autogenerates tables.

DO $$
BEGIN
    IF NOT EXISTS (
        SELECT 1 FROM pg_type t
        JOIN pg_namespace n ON n.oid = t.typnamespace
        WHERE t.typname = 'rehireeligibility' AND n.nspname = 'app'
    ) THEN
        CREATE TYPE app.rehireeligibility AS ENUM ('yes', 'no', 'conditional');
    END IF;
END $$;

CREATE TABLE IF NOT EXISTS app."Verification_Check" (
    id                          uuid PRIMARY KEY,
    recruiter_id                uuid,
    candidate_id                uuid,
    position_applied            varchar,
    department_id               uuid,
    department                  varchar,
    date_time                   timestamptz,
    confirmed_job_title         varchar,
    confirmed_from              date,
    confirmed_to                date,
    reason_for_leaving          varchar,
    technical_knowledge_rating  integer,
    technical_knowledge_notes   varchar,
    reliability_rating          integer,
    reliability_notes           varchar,
    communication_rating        integer,
    communication_notes         varchar,
    problem_solving_rating      integer,
    problem_solving_notes       varchar,
    strengths                   varchar,
    areas_for_growth            varchar,
    rehire_eligibility          app.rehireeligibility,
    rehire_comments             varchar,
    referee_full_name           varchar,
    referee_current_title       varchar,
    referee_company             varchar,
    referee_phone               varchar,
    referee_email               varchar,
    created_by                  uuid,
    created_at                  timestamptz NOT NULL DEFAULT NOW(),
    updated_at                  timestamptz NOT NULL DEFAULT NOW(),
    is_deleted                  boolean NOT NULL DEFAULT false,
    CONSTRAINT "fk_Verification_Check_recruiter_id_users"
        FOREIGN KEY (recruiter_id) REFERENCES app.users (id),
    CONSTRAINT "fk_Verification_Check_candidate_id_users"
        FOREIGN KEY (candidate_id) REFERENCES app.users (id),
    CONSTRAINT "fk_Verification_Check_department_id_departments"
        FOREIGN KEY (department_id) REFERENCES app.departments (id),
    CONSTRAINT "fk_Verification_Check_created_by_users"
        FOREIGN KEY (created_by) REFERENCES app.users (id)
);

CREATE INDEX IF NOT EXISTS "ix_Verification_Check_recruiter_id"
    ON app."Verification_Check" (recruiter_id);

CREATE INDEX IF NOT EXISTS "ix_Verification_Check_candidate_id"
    ON app."Verification_Check" (candidate_id);