#' @importFrom DBI dbConnect dbDisconnect dbWriteTable dbGetQuery dbExecute
#' @importFrom RSQLite SQLite
store_build_metadata <- function(
    package_name, tag, platform,
    error_occurred, error) {
  # Create a new SQLite connection
  con <- dbConnect(RSQLite::SQLite(), dbname = "metadata.db")

  dbExecute(con, "BEGIN TRANSACTION")

  # Create the "metadata" table if it does not exist
  dbExecute(con, "CREATE TABLE IF NOT EXISTS metadata (
    package_name TEXT,
    tag TEXT,
    platform TEXT,
    error_occurred BOOLEAN,
    build_timestamp TEXT
  )")

  # Create an index on the package_name and tag columns
  dbExecute(con, "CREATE INDEX IF NOT EXISTS idx_metadata_package_tag ON metadata(package_name, platform)")

  # Check if an entry with the same package_name and tag already exists
  existing_entries <- dbGetQuery(con, paste0(
    "SELECT * FROM metadata WHERE package_name = '",
    package_name, "' AND tag = '", tag, "'"
  ))

  if (nrow(existing_entries) >= 1) {
    cli::cli_alert_info("{.fun store_build_metadata}: Build metadata for {.field {package_name}} {.field {tag}} already exists.")
  } else {
    cli::cli_alert_info("{.fun store_build_metadata}: Storing build metadata for {.field {package_name}} {.field {tag}}.")
    # Create a data frame with the metadata
    metadata <- data.frame(
      package_name = package_name,
      tag = tag,
      platform = platform,
      error_occurred = error_occurred,
      build_timestamp = format(Sys.time(), "%Y-%m-%d")
    )
    # Write the data frame to the SQLite database
    dbWriteTable(con, "metadata", metadata, append = TRUE)
  }

  dbExecute(con, "COMMIT")

  # Close the SQLite connection
  dbDisconnect(con)
}

#' @importFrom DBI dbConnect dbGetQuery
#' @importFrom RSQLite SQLite
#' @importFrom dplyr filter_at vars all_vars
query_build_metadata <- function(package_name = NULL, tag = NULL, platform = NULL,
                                 error_occurred = NULL, error = NULL, build_timestamp = NULL) {
  # Create a new SQLite connection
  con <- dbConnect(RSQLite::SQLite(), dbname = "metadata.db")

  # Read the entire table
  metadata <- dbGetQuery(con, "SELECT * FROM metadata")

  # Close the SQLite connection
  dbDisconnect(con)

  # Filter the data frame based on the given parameters
  filter_conditions <- list(
    package_name = package_name, tag = tag, platform = platform,
    error_occurred = error_occurred, error = error,
    build_timestamp = build_timestamp
  )

  # Remove NULL elements from the list
  filter_conditions <- filter_conditions[!sapply(filter_conditions, is.null)]

  # Apply the filter conditions if any exist
  if (length(filter_conditions) > 0) {
    metadata <- dplyr::filter_at(
      metadata, dplyr::vars(names(filter_conditions)),
      dplyr::all_vars(. == filter_conditions[[.]])
    )
  }

  return(metadata)
}


#' @importFrom DBI dbConnect dbDisconnect dbWriteTable dbGetQuery dbExecute dbListTables
#' @importFrom RSQLite SQLite
#' @importFrom dplyr group_by summarise filter n
build_metadata_summary <- function(package_name, platform) {
  # Create a new SQLite connection
  con <- dbConnect(RSQLite::SQLite(), dbname = "metadata.db")

  metadata <- dbGetQuery(con, paste0(
    "SELECT * FROM metadata WHERE package_name = '", package_name,
    "' AND platform = '", platform, "'"
  ))

  print(sprintf("Package: %s", package_name))
  print(sprintf("Platform: %s", platform))

  # Calculate the summary
  summary <- metadata %>%
    group_by(package_name, platform) %>%
    summarise(
      successful_builds = sum(!error_occurred),
      unsuccessful_builds = sum(error_occurred),
      total_builds = n(),
      percentage_successful_builds = round(successful_builds / total_builds * 100, 2)
    )

  print("DEBUG")
  print(summary)

  # Check if the metadata_summary table exists
  if ("metadata_summary" %in% dbListTables(con)) {
    # Update the row for the specified package
    dbExecute(con, paste0(
      "UPDATE metadata_summary SET successful_builds = ", summary$successful_builds,
      ", unsuccessful_builds = ", summary$unsuccessful_builds,
      ", total_builds = ", summary$total_builds,
      ", percentage_successful_builds = ", summary$percentage_successful_builds,
      " WHERE package_name = '", package_name,
      "' AND platform = '", platform, "'"
    ))
  } else {
    # Write the summary to a new table in the SQLite database
    dbWriteTable(con, "metadata_summary", summary)
  }

  # Close the SQLite connection
  dbDisconnect(con)
}

#' @importFrom RSQLite SQLite
query_metadata_summary <- function(package_name = NULL, platform = NULL) {
  # Create a new SQLite connection
  con <- dbConnect(RSQLite::SQLite(), dbname = "metadata.db")

  # If both package_name and platform are NULL, return the full table
  if (is.null(package_name) && is.null(platform)) {
    summary <- dbGetQuery(con, "SELECT * FROM metadata_summary")
  } else {
    # Query the metadata_summary table for the specified package and platform
    summary <- dbGetQuery(con, paste0(
      "SELECT * FROM metadata_summary WHERE package_name = '",
      package_name, "' AND platform = '", platform, "'"
    ))
  }

  # Close the SQLite connection
  dbDisconnect(con)

  return(summary)
}