#!/usr/bin/env bash
set -euo pipefail

# Usage:
#   ./import_jsonl.sh "postgresql://user:pass@host:5432/dbname" gloss doc /path/to/file.jsonl
#
# Notes:
# - Creates table if it doesn't exist.
# - Inserts each JSON line into a jsonb column.
# - Skips blank lines.

DB_URL="${1:?db url}"
TABLE="${2:?table name}"
COL="${3:?json column name}"
FILE="${4:?jsonl file path}"

psql "$DB_URL" -v ON_ERROR_STOP=1 <<SQL
CREATE TABLE IF NOT EXISTS ${TABLE} (
  id bigserial PRIMARY KEY,
  ${COL} jsonb NOT NULL
);
SQL

# \copy runs on the client, so we can feed it from a local file.
# We copy into a 1-column staging table, then cast to jsonb and insert.
psql "$DB_URL" -v ON_ERROR_STOP=1 <<SQL
CREATE TEMP TABLE _jsonl_stage(line text);

\\copy _jsonl_stage(line) FROM '${FILE}' WITH (FORMAT text);

INSERT INTO ${TABLE}(${COL})
SELECT line::jsonb
FROM _jsonl_stage
WHERE btrim(line) <> '';

-- optional: show count inserted this run
SELECT count(*) AS inserted_now FROM _jsonl_stage WHERE btrim(line) <> '';
SQL