import * as path from "path";

import * as core from "@actions/core";
import { v4 as uuidV4 } from "uuid";

import {
  getActionVersion,
  getOptionalInput,
  getRequiredInput,
  getTemporaryDirectory,
} from "./actions-util";
import { getGitHubVersion } from "./api-client";
import { CodeQL } from "./codeql";
import * as configUtils from "./config-utils";
import { getMlPoweredJsQueriesStatus } from "./config-utils";
import { EnvVar } from "./environment";
import { Feature, Features } from "./feature-flags";
import { initCodeQL, initConfig, installPythonDeps, runInit } from "./init";
import { Language } from "./languages";
import { getActionsLogger, Logger } from "./logging";
import { parseRepositoryNwo } from "./repository";
import { ToolsSource } from "./setup-codeql";
import {
  StatusReportBase,
  createStatusReportBase,
  getActionsStatus,
  sendStatusReport,
} from "./status-report";
import { getTotalCacheSize } from "./trap-caching";
import {
  checkDiskUsage,
  checkForTimeout,
  checkGitHubVersionInRange,
  codeQlVersionAbove,
  DEFAULT_DEBUG_ARTIFACT_NAME,
  DEFAULT_DEBUG_DATABASE_NAME,
  getMemoryFlagValue,
  getRequiredEnvParam,
  getThreadsFlagValue,
  initializeEnvironment,
  isHostedRunner,
  UserError,
  wrapError,
} from "./util";
import { validateWorkflow } from "./workflow";

/** Fields of the init status report that can be sent before `config` is populated. */
interface InitStatusReport extends StatusReportBase {
  /** Value given by the user as the "tools" input. */
  tools_input: string;
  /** Version of the bundle used. */
  tools_resolved_version: string;
  /** Where the bundle originated from. */
  tools_source: ToolsSource;
  /** Comma-separated list of languages specified explicitly in the workflow file. */
  workflow_languages: string;
}

/** Fields of the init status report that are populated using values from `config`. */
interface InitWithConfigStatusReport extends InitStatusReport {
  /** Comma-separated list of languages where the default queries are disabled. */
  disable_default_queries: string;
  /**
   * Comma-separated list of languages that analysis was run for.
   *
   * This may be from the workflow file or may be calculated from repository contents
   */
  languages: string;
  /** Comma-separated list of paths, from the 'paths' config field. */
  paths: string;
  /** Comma-separated list of paths, from the 'paths-ignore' config field. */
  paths_ignore: string;
  /** Comma-separated list of queries sources, from the 'queries' config field or workflow input. */
  queries: string;
  /** Comma-separated list of languages for which we are using TRAP caching. */
  trap_cache_languages: string;
  /** Size of TRAP caches that we downloaded, in bytes. */
  trap_cache_download_size_bytes: number;
  /** Time taken to download TRAP caches, in milliseconds. */
  trap_cache_download_duration_ms: number;
}

/** Fields of the init status report populated when the tools source is `download`. */
interface InitToolsDownloadFields {
  /** Time taken to download the bundle, in milliseconds. */
  tools_download_duration_ms?: number;
  /**
   * Whether the relevant tools dotcom feature flags have been misconfigured.
   * Only populated if we attempt to determine the default version based on the dotcom feature flags. */
  tools_feature_flags_valid?: boolean;
}

async function sendCompletedStatusReport(
  startedAt: Date,
  config: configUtils.Config | undefined,
  toolsDownloadDurationMs: number | undefined,
  toolsFeatureFlagsValid: boolean | undefined,
  toolsSource: ToolsSource,
  toolsVersion: string,
  logger: Logger,
  error?: Error,
) {
  const statusReportBase = await createStatusReportBase(
    "init",
    getActionsStatus(error),
    startedAt,
    await checkDiskUsage(logger),
    error?.message,
    error?.stack,
  );

  const workflowLanguages = getOptionalInput("languages");

  const initStatusReport: InitStatusReport = {
    ...statusReportBase,
    tools_input: getOptionalInput("tools") || "",
    tools_resolved_version: toolsVersion,
    tools_source: toolsSource || ToolsSource.Unknown,
    workflow_languages: workflowLanguages || "",
  };

  const initToolsDownloadFields: InitToolsDownloadFields = {};

  if (toolsDownloadDurationMs !== undefined) {
    initToolsDownloadFields.tools_download_duration_ms =
      toolsDownloadDurationMs;
  }
  if (toolsFeatureFlagsValid !== undefined) {
    initToolsDownloadFields.tools_feature_flags_valid = toolsFeatureFlagsValid;
  }

  if (config !== undefined) {
    const languages = config.languages.join(",");
    const paths = (config.originalUserInput.paths || []).join(",");
    const pathsIgnore = (config.originalUserInput["paths-ignore"] || []).join(
      ",",
    );
    const disableDefaultQueries = config.originalUserInput[
      "disable-default-queries"
    ]
      ? languages
      : "";

    const queries: string[] = [];
    let queriesInput = getOptionalInput("queries")?.trim();
    if (queriesInput === undefined || queriesInput.startsWith("+")) {
      queries.push(
        ...(config.originalUserInput.queries || []).map((q) => q.uses),
      );
    }
    if (queriesInput !== undefined) {
      queriesInput = queriesInput.startsWith("+")
        ? queriesInput.slice(1)
        : queriesInput;
      queries.push(...queriesInput.split(","));
    }

    // Append fields that are dependent on `config`
    const initWithConfigStatusReport: InitWithConfigStatusReport = {
      ...initStatusReport,
      disable_default_queries: disableDefaultQueries,
      languages,
      ml_powered_javascript_queries: getMlPoweredJsQueriesStatus(config),
      paths,
      paths_ignore: pathsIgnore,
      queries: queries.join(","),
      trap_cache_languages: Object.keys(config.trapCaches).join(","),
      trap_cache_download_size_bytes: Math.round(
        await getTotalCacheSize(config.trapCaches, logger),
      ),
      trap_cache_download_duration_ms: Math.round(config.trapCacheDownloadTime),
    };
    await sendStatusReport({
      ...initWithConfigStatusReport,
      ...initToolsDownloadFields,
    });
  } else {
    await sendStatusReport({ ...initStatusReport, ...initToolsDownloadFields });
  }
}

async function run() {
  const startedAt = new Date();
  const logger = getActionsLogger();
  initializeEnvironment(getActionVersion());

  let config: configUtils.Config;
  let codeql: CodeQL;
  let toolsDownloadDurationMs: number | undefined;
  let toolsFeatureFlagsValid: boolean | undefined;
  let toolsSource: ToolsSource;
  let toolsVersion: string;

  const apiDetails = {
    auth: getRequiredInput("token"),
    externalRepoAuth: getOptionalInput("external-repository-token"),
    url: getRequiredEnvParam("GITHUB_SERVER_URL"),
    apiURL: getRequiredEnvParam("GITHUB_API_URL"),
  };

  const gitHubVersion = await getGitHubVersion();
  checkGitHubVersionInRange(gitHubVersion, logger);

  const repositoryNwo = parseRepositoryNwo(
    getRequiredEnvParam("GITHUB_REPOSITORY"),
  );

  const registriesInput = getOptionalInput("registries");

  const features = new Features(
    gitHubVersion,
    repositoryNwo,
    getTemporaryDirectory(),
    logger,
  );

  core.exportVariable(EnvVar.JOB_RUN_UUID, uuidV4());

  try {
    const workflowErrors = await validateWorkflow(logger);

    if (
      !(await sendStatusReport(
        await createStatusReportBase(
          "init",
          "starting",
          startedAt,
          await checkDiskUsage(logger),
          workflowErrors,
        ),
      ))
    ) {
      return;
    }

    const codeQLDefaultVersionInfo = await features.getDefaultCliVersion(
      gitHubVersion.type,
    );
    toolsFeatureFlagsValid = codeQLDefaultVersionInfo.toolsFeatureFlagsValid;
    const initCodeQLResult = await initCodeQL(
      getOptionalInput("tools"),
      apiDetails,
      getTemporaryDirectory(),
      gitHubVersion.type,
      codeQLDefaultVersionInfo,
      logger,
    );
    codeql = initCodeQLResult.codeql;
    toolsDownloadDurationMs = initCodeQLResult.toolsDownloadDurationMs;
    toolsVersion = initCodeQLResult.toolsVersion;
    toolsSource = initCodeQLResult.toolsSource;

    config = await initConfig(
      getOptionalInput("languages"),
      getOptionalInput("queries"),
      getOptionalInput("packs"),
      registriesInput,
      getOptionalInput("config-file"),
      getOptionalInput("db-location"),
      getOptionalInput("config"),
      getTrapCachingEnabled(),
      // Debug mode is enabled if:
      // - The `init` Action is passed `debug: true`.
      // - Actions step debugging is enabled (e.g. by [enabling debug logging for a rerun](https://docs.github.com/en/actions/managing-workflow-runs/re-running-workflows-and-jobs#re-running-all-the-jobs-in-a-workflow),
      //   or by setting the `ACTIONS_STEP_DEBUG` secret to `true`).
      getOptionalInput("debug") === "true" || core.isDebug(),
      getOptionalInput("debug-artifact-name") || DEFAULT_DEBUG_ARTIFACT_NAME,
      getOptionalInput("debug-database-name") || DEFAULT_DEBUG_DATABASE_NAME,
      repositoryNwo,
      getTemporaryDirectory(),
      codeql,
      getRequiredEnvParam("GITHUB_WORKSPACE"),
      gitHubVersion,
      apiDetails,
      features,
      logger,
    );

    if (
      config.languages.includes(Language.python) &&
      getRequiredInput("setup-python-dependencies") === "true"
    ) {
      if (
        await features.getValue(
          Feature.DisablePythonDependencyInstallationEnabled,
          codeql,
        )
      ) {
        logger.info("Skipping python dependency installation");
      } else {
        try {
          await installPythonDeps(codeql, logger);
        } catch (unwrappedError) {
          const error = wrapError(unwrappedError);
          logger.warning(
            `${error.message} You can call this action with 'setup-python-dependencies: false' to disable this process`,
          );
        }
      }
    }
  } catch (unwrappedError) {
    const error = wrapError(unwrappedError);
    core.setFailed(error.message);
    await sendStatusReport(
      await createStatusReportBase(
        "init",
        error instanceof UserError ? "user-error" : "aborted",
        startedAt,
        await checkDiskUsage(),
        error.message,
        error.stack,
      ),
    );
    return;
  }

  try {
    // Forward Go flags
    const goFlags = process.env["GOFLAGS"];
    if (goFlags) {
      core.exportVariable("GOFLAGS", goFlags);
      core.warning(
        "Passing the GOFLAGS env parameter to the init action is deprecated. Please move this to the analyze action.",
      );
    }

    // Limit RAM and threads for extractors. When running extractors, the CodeQL CLI obeys the
    // CODEQL_RAM and CODEQL_THREADS environment variables to decide how much RAM and how many
    // threads it would ask extractors to use. See help text for the "--ram" and "--threads"
    // options at https://codeql.github.com/docs/codeql-cli/manual/database-trace-command/
    // for details.
    core.exportVariable(
      "CODEQL_RAM",
      process.env["CODEQL_RAM"] ||
        getMemoryFlagValue(getOptionalInput("ram"), logger).toString(),
    );
    core.exportVariable(
      "CODEQL_THREADS",
      getThreadsFlagValue(getOptionalInput("threads"), logger).toString(),
    );

    // Disable Kotlin extractor if feature flag set
    if (await features.getValue(Feature.DisableKotlinAnalysisEnabled)) {
      core.exportVariable("CODEQL_EXTRACTOR_JAVA_AGENT_DISABLE_KOTLIN", "true");
    }

    const kotlinLimitVar =
      "CODEQL_EXTRACTOR_KOTLIN_OVERRIDE_MAXIMUM_VERSION_LIMIT";
    if (
      (await codeQlVersionAbove(codeql, "2.13.4")) &&
      !(await codeQlVersionAbove(codeql, "2.14.4"))
    ) {
      core.exportVariable(kotlinLimitVar, "1.9.20");
    }

    if (config.languages.includes(Language.java)) {
      const envVar = "CODEQL_EXTRACTOR_JAVA_RUN_ANNOTATION_PROCESSORS";
      if (process.env[envVar]) {
        logger.info(
          `Environment variable ${envVar} already set. Not en/disabling CodeQL Java Lombok support`,
        );
      } else if (
        await features.getValue(Feature.CodeqlJavaLombokEnabled, codeql)
      ) {
        logger.info("Enabling CodeQL Java Lombok support");
        core.exportVariable(envVar, "true");
      } else {
        logger.info("Disabling CodeQL Java Lombok support");
        core.exportVariable(envVar, "false");
      }
    }

    // Disable Python dependency extraction if feature flag set
    if (
      await features.getValue(
        Feature.DisablePythonDependencyInstallationEnabled,
        codeql,
      )
    ) {
      core.exportVariable(
        "CODEQL_EXTRACTOR_PYTHON_DISABLE_LIBRARY_EXTRACTION",
        "true",
      );
    }

    const sourceRoot = path.resolve(
      getRequiredEnvParam("GITHUB_WORKSPACE"),
      getOptionalInput("source-root") || "",
    );

    const tracerConfig = await runInit(
      codeql,
      config,
      sourceRoot,
      "Runner.Worker.exe",
      registriesInput,
      features,
      apiDetails,
      logger,
    );
    if (tracerConfig !== undefined) {
      for (const [key, value] of Object.entries(tracerConfig.env)) {
        core.exportVariable(key, value);
      }
    }

    core.setOutput("codeql-path", config.codeQLCmd);
  } catch (unwrappedError) {
    const error = wrapError(unwrappedError);
    core.setFailed(error.message);
    await sendCompletedStatusReport(
      startedAt,
      config,
      toolsDownloadDurationMs,
      toolsFeatureFlagsValid,
      toolsSource,
      toolsVersion,
      logger,
      error,
    );
    return;
  }
  await sendCompletedStatusReport(
    startedAt,
    config,
    toolsDownloadDurationMs,
    toolsFeatureFlagsValid,
    toolsSource,
    toolsVersion,
    logger,
  );
}

function getTrapCachingEnabled(): boolean {
  // If the workflow specified something always respect that
  const trapCaching = getOptionalInput("trap-caching");
  if (trapCaching !== undefined) return trapCaching === "true";

  // On self-hosted runners which may have slow network access, disable TRAP caching by default
  if (!isHostedRunner()) return false;

  // On hosted runners, enable TRAP caching by default
  return true;
}

async function runWrapper() {
  try {
    await run();
  } catch (error) {
    core.setFailed(`init action failed: ${wrapError(error).message}`);
  }
  await checkForTimeout();
}

void runWrapper();