#!/bin/bash

# Check if exactly two arguments are provided
if [ "$#" -ne 2 ]; then
    echo "Usage: $0 <dump_folder> <duckdb_file>"
    exit 1
fi

# Assign the folder and DuckDB file arguments to variables
FOLDER=$1
DUCKDB_FILE=$2

# Check if the provided folder is a directory
if [ ! -d "$FOLDER" ]; then
    echo "Error: $FOLDER is not a directory"
    exit 1
fi

# Check if pv is installed
PV_INSTALLED=false
if command -v pv &> /dev/null; then
    PV_INSTALLED=true
fi

# List of table names
TABLES=("authors" "works" "editions")

# Function to process each file
process_file() {
    local file=$1
    local table=$2

    if $PV_INSTALLED; then
        pv -N "$table" < "$file"
    else
        cat "$file"
    fi | gunzip -c | cut -f5 | duckdb "$DUCKDB_FILE" -c "CREATE TABLE $table AS SELECT * FROM read_json_auto('/dev/stdin', union_by_name=true, ignore_errors=true);"
}

# Process each table
for TABLE in "${TABLES[@]}"; do
    # Search for the file using a regex pattern
    FILE=$(ls "$FOLDER"/ol_dump_${TABLE}_*.txt.gz 2> /dev/null | head -n 1)
    
    # Check if the file exists
    if [ -n "$FILE" ]; then
        process_file "$FILE" "$TABLE"
    else
        echo "Warning: Dump file for $TABLE not found in $FOLDER. Skipping $TABLE."
    fi
done