#!/bin/bash

# THIS SCRIPT IS USED TO MIGRATE FROM ADONISJS V4 TO ADONISJS V5
# IT SHOULD BE RUN BEFORE RUNNING THE SERVER

# Check if DB_DATABASE is undefined or empty, and set a default value if necessary
if [ -z "$DB_DATABASE" ]; then
    DB_DATABASE="ferdium"
fi

# Check if DATA_DIR is undefined or empty, and set a default value if necessary
if [ -z "$DATA_DIR" ]; then
    DATA_DIR="/data"
fi

# Define the path to your SQLite database file
db_file="$DATA_DIR/$DB_DATABASE.sqlite"

# Check if the database file exists
if [ ! -f "$db_file" ]; then
    echo "Database file '$db_file' not found. An empty database will be created."
    exit 0
fi

# Check if the "adonis_schema_versions" table exists and if the version is less than 2
version=$(sqlite3 "$db_file" "SELECT version FROM adonis_schema_versions LIMIT 1;" 2>/dev/null)
if [ -z "$version" ] || [ "$version" -lt 2 ]; then
    # Table not found or version less than 2, proceed
    echo "-- Starting database migration from AdonisJS v4 to v5 --"

    # Check if the "adonis_schema" table exists
    schema_exists=$(sqlite3 "$db_file" "SELECT name FROM sqlite_master WHERE type='table' AND name='adonis_schema';" 2>/dev/null)
    if [ -n "$schema_exists" ]; then
        # "adonis_schema" table exists, proceed

        # Iterate through rows in the "name" column of "adonis_schema" and append "database/migrations" to each value
        sqlite3 -batch "$db_file" "SELECT name FROM adonis_schema;" 2>/dev/null | while read -r old_value; do
            new_value="database/migrations/$old_value"
            echo "Updating value from '$old_value' to '$new_value'"

            # Update the value in the database
            sqlite3 "$db_file" "UPDATE adonis_schema SET name='$new_value' WHERE name='$old_value';" 2>/dev/null
        done
    else
        echo "ERROR: Table 'adonis_schema' not found."
        exit 1
    fi
# else
    # echo "Version is greater than or equal to 2. Exiting script."
fi