testthat::skip("Testing object updates should be done manually.")

# List files in tests/old_experiments.
archive_files <- list.files(
  path = "./tests/old_experiments",
  pattern = ".zip",
  full.names = TRUE)

# Set path to the directory where the archive should be unpacked.
archive_directory <- file.path(".", "tests", "old_experiments", "_experiment")

test_generate_experiment_parameters <- coro::generator(function(outcome_type) {
  for (current_outcome_type in outcome_type) {
    # Set learner
    learner <- switch(
      current_outcome_type,
      "binomial" = c("glm_logistic", "lasso"),
      "multinomial" = c("glm", "lasso"),
      "count" = c("glm", "lasso"),
      "continuous" = c("glm_gaussian", "lasso"),
      "survival" = c("cox", "survival_regr_weibull"))

    coro::yield(list(
      "experimental_design" = "bs(fs+mb,3)",
      "outcome_type" = current_outcome_type,
      "fs_method" = c("mim", "concordance"),
      "learner" = learner))
  }
})

# Iterate over archive files.
for (archive_file in archive_files) {
  # Determine outcome type by stripping the extension, underscore and version.
  outcome_type <- gsub(
    x = basename(archive_file),
    pattern = "[[:digit:]]+|[.]zip$|[_]",
    replacement = "")

  # Determine the version by stripping the extension and all alpha-characters.
  familiar_version <- gsub(
    x = basename(archive_file),
    pattern = "[[:alpha:]]+|[.]zip$",
    replacement = "")

  # Strip final underscore.
  familiar_version <- gsub(
    x = familiar_version,
    pattern = "[_]$",
    replacement = "")

  # Replace underscores by period and convert to package version object.
  familiar_version <- as.package_version(gsub(
    x = familiar_version,
    pattern = "[_]",
    replacement = "."))

  # Avoid running tests if the archived version for some reason exceeds the
  # installed familiar version.
  if (utils::packageVersion("familiar") < familiar_version) {
    warning(
      "The installed version of familiar (",
      utils::packageVersion("familiar"),
      ") is older than the archive being tested (",
      familiar_version, ").")

    next
  }

  # Unzip directory.
  utils::unzip(archive_file,
    exdir = archive_directory,
    overwrite = TRUE)

  # Yield current set of parameters.
  config_parameters <- test_generate_experiment_parameters(outcome_type = outcome_type)()

  # Recreate data.
  data <- familiar:::test_create_good_data_random_missing(outcome_type = outcome_type)

  # Test 1: Running the experiment again ---------------------------------------

  message(paste0(
    "-------------------------------------------------------------\n",
    outcome_type, " (", familiar_version, "): ",
    "test direct export\n",
    "-------------------------------------------------------------\n"
  ))

  # Remove the results directory.
  unlink(
    file.path(archive_directory, "results"),
    recursive = TRUE)

  # Run the experiment to extract the data again.
  do.call(
    familiar::summon_familiar,
    args = c(
      list(
        "data" = data,
        "experiment_dir" = archive_directory,
        "experiment_data" = list.files(
          path = archive_directory,
          full.names = TRUE,
          pattern = "iterations.RDS"),
        "parallel" = FALSE),
      config_parameters))

  # Test 2: Running the experiment again, starting with familiar data objects ------

  message(paste0(
    "-------------------------------------------------------------\n",
    outcome_type, " (", familiar_version, "): ",
    "test export after collecting familiarData objects\n",
    "-------------------------------------------------------------\n"
  ))

  # Remove the results directory.
  unlink(
    file.path(archive_directory, "results"),
    recursive = TRUE)

  # Remove the familiar_collections directory.
  unlink(
    file.path(archive_directory, "familiar_collections"),
    recursive = TRUE)

  # Run the experiment to extract the data again.
  do.call(
    familiar::summon_familiar,
    args = c(
      list(
        "data" = data,
        "experiment_dir" = archive_directory,
        "experiment_data" = list.files(
          path = archive_directory,
          full.names = TRUE,
          pattern = "iterations.RDS"),
        "parallel" = FALSE),
      config_parameters))

  # Test 3: Running the experiment again, starting with ensembles --------------

  if (familiar_version > "1.1.4") {
    # The isolation forests within the historic version 1.1.4 are not backward
    # compatible, and we need to skip these tests for version 1.1.4.
    # Remove temporary directory.
    unlink(
      file.path(archive_directory),
      recursive = TRUE
    )
    next
  }
  
  message(paste0(
    "-------------------------------------------------------------\n",
    outcome_type, " (", familiar_version, "): ",
    "test export after creating familiarData objects\n",
    "-------------------------------------------------------------\n"
  ))

  # Remove temporary directory.
  unlink(
    file.path(archive_directory),
    recursive = TRUE)
}