import { AppSettings } from '@shared/types.js';
import * as settingsRepo from '@server/repositories/settings.js';
import { getEnvSettingsData } from './envSettings.js';
import { extractProjectsFromProfile, resolveResumeProjectsSettings } from './resumeProjects.js';
import { getProfile } from './profile.js';

/**
 * Get the effective app settings, combining environment variables and database overrides.
 */
export async function getEffectiveSettings(): Promise<AppSettings> {
  // Parallelize slow operations
  const [overrides, profile] = await Promise.all([
    settingsRepo.getAllSettings(),
    getProfile(),
  ]);

  const envSettings = await getEnvSettingsData(overrides);

  const defaultModel = process.env.MODEL || 'openai/gpt-4o-mini';
  const overrideModel = overrides.model ?? null;
  const model = overrideModel || defaultModel;

  const overrideModelScorer = overrides.modelScorer ?? null;
  const modelScorer = overrideModelScorer || model;

  const overrideModelTailoring = overrides.modelTailoring ?? null;
  const modelTailoring = overrideModelTailoring || model;

  const overrideModelProjectSelection = overrides.modelProjectSelection ?? null;
  const modelProjectSelection = overrideModelProjectSelection || model;

  const defaultPipelineWebhookUrl = process.env.PIPELINE_WEBHOOK_URL || process.env.WEBHOOK_URL || '';
  const overridePipelineWebhookUrl = overrides.pipelineWebhookUrl ?? null;
  const pipelineWebhookUrl = overridePipelineWebhookUrl || defaultPipelineWebhookUrl;

  const defaultJobCompleteWebhookUrl = process.env.JOB_COMPLETE_WEBHOOK_URL || '';
  const overrideJobCompleteWebhookUrl = overrides.jobCompleteWebhookUrl ?? null;
  const jobCompleteWebhookUrl = overrideJobCompleteWebhookUrl || defaultJobCompleteWebhookUrl;

  const { catalog } = extractProjectsFromProfile(profile);
  const overrideResumeProjectsRaw = overrides.resumeProjects ?? null;
  const resumeProjectsData = resolveResumeProjectsSettings({ catalog, overrideRaw: overrideResumeProjectsRaw });

  const defaultUkvisajobsMaxJobs = 50;
  const overrideUkvisajobsMaxJobsRaw = overrides.ukvisajobsMaxJobs;
  const overrideUkvisajobsMaxJobs = overrideUkvisajobsMaxJobsRaw ? parseInt(overrideUkvisajobsMaxJobsRaw, 10) : null;
  const ukvisajobsMaxJobs = overrideUkvisajobsMaxJobs ?? defaultUkvisajobsMaxJobs;

  const defaultGradcrackerMaxJobsPerTerm = 50;
  const overrideGradcrackerMaxJobsPerTermRaw = overrides.gradcrackerMaxJobsPerTerm;
  const overrideGradcrackerMaxJobsPerTerm = overrideGradcrackerMaxJobsPerTermRaw ? parseInt(overrideGradcrackerMaxJobsPerTermRaw, 10) : null;
  const gradcrackerMaxJobsPerTerm = overrideGradcrackerMaxJobsPerTerm ?? defaultGradcrackerMaxJobsPerTerm;

  const defaultSearchTermsEnv = process.env.JOBSPY_SEARCH_TERMS || 'web developer';
  const defaultSearchTerms = defaultSearchTermsEnv.split('|').map(s => s.trim()).filter(Boolean);
  const overrideSearchTermsRaw = overrides.searchTerms;
  const overrideSearchTerms = overrideSearchTermsRaw ? JSON.parse(overrideSearchTermsRaw) as string[] : null;
  const searchTerms = overrideSearchTerms ?? defaultSearchTerms;

  const defaultJobspyLocation = process.env.JOBSPY_LOCATION || 'UK';
  const overrideJobspyLocation = overrides.jobspyLocation ?? null;
  const jobspyLocation = overrideJobspyLocation || defaultJobspyLocation;

  const defaultJobspyResultsWanted = parseInt(process.env.JOBSPY_RESULTS_WANTED || '200', 10);
  const overrideJobspyResultsWantedRaw = overrides.jobspyResultsWanted;
  const overrideJobspyResultsWanted = overrideJobspyResultsWantedRaw ? parseInt(overrideJobspyResultsWantedRaw, 10) : null;
  const jobspyResultsWanted = overrideJobspyResultsWanted ?? defaultJobspyResultsWanted;

  const defaultJobspyHoursOld = parseInt(process.env.JOBSPY_HOURS_OLD || '72', 10);
  const overrideJobspyHoursOldRaw = overrides.jobspyHoursOld;
  const overrideJobspyHoursOld = overrideJobspyHoursOldRaw ? parseInt(overrideJobspyHoursOldRaw, 10) : null;
  const jobspyHoursOld = overrideJobspyHoursOld ?? defaultJobspyHoursOld;

  const defaultJobspyCountryIndeed = process.env.JOBSPY_COUNTRY_INDEED || 'UK';
  const overrideJobspyCountryIndeed = overrides.jobspyCountryIndeed ?? null;
  const jobspyCountryIndeed = overrideJobspyCountryIndeed || defaultJobspyCountryIndeed;

  const defaultJobspySites = (process.env.JOBSPY_SITES || 'indeed,linkedin').split(',').map(s => s.trim()).filter(Boolean);
  const overrideJobspySitesRaw = overrides.jobspySites;
  const overrideJobspySites = overrideJobspySitesRaw ? JSON.parse(overrideJobspySitesRaw) as string[] : null;
  const jobspySites = overrideJobspySites ?? defaultJobspySites;

  const defaultJobspyLinkedinFetchDescription = (process.env.JOBSPY_LINKEDIN_FETCH_DESCRIPTION || '1') === '1';
  const overrideJobspyLinkedinFetchDescriptionRaw = overrides.jobspyLinkedinFetchDescription;
  const overrideJobspyLinkedinFetchDescription = overrideJobspyLinkedinFetchDescriptionRaw
    ? overrideJobspyLinkedinFetchDescriptionRaw === 'true' || overrideJobspyLinkedinFetchDescriptionRaw === '1'
    : null;
  const jobspyLinkedinFetchDescription = overrideJobspyLinkedinFetchDescription ?? defaultJobspyLinkedinFetchDescription;

  const defaultShowSponsorInfo = true;
  const overrideShowSponsorInfoRaw = overrides.showSponsorInfo;
  const overrideShowSponsorInfo = overrideShowSponsorInfoRaw
    ? overrideShowSponsorInfoRaw === 'true' || overrideShowSponsorInfoRaw === '1'
    : null;
  const showSponsorInfo = overrideShowSponsorInfo ?? defaultShowSponsorInfo;

  return {
    model,
    defaultModel,
    overrideModel,
    modelScorer,
    overrideModelScorer,
    modelTailoring,
    overrideModelTailoring,
    modelProjectSelection,
    overrideModelProjectSelection,
    pipelineWebhookUrl,
    defaultPipelineWebhookUrl,
    overridePipelineWebhookUrl,
    jobCompleteWebhookUrl,
    defaultJobCompleteWebhookUrl,
    overrideJobCompleteWebhookUrl,
    ...resumeProjectsData,
    ukvisajobsMaxJobs,
    defaultUkvisajobsMaxJobs,
    overrideUkvisajobsMaxJobs,
    gradcrackerMaxJobsPerTerm,
    defaultGradcrackerMaxJobsPerTerm,
    overrideGradcrackerMaxJobsPerTerm,
    searchTerms,
    defaultSearchTerms,
    overrideSearchTerms,
    jobspyLocation,
    defaultJobspyLocation,
    overrideJobspyLocation,
    jobspyResultsWanted,
    defaultJobspyResultsWanted,
    overrideJobspyResultsWanted,
    jobspyHoursOld,
    defaultJobspyHoursOld,
    overrideJobspyHoursOld,
    jobspyCountryIndeed,
    defaultJobspyCountryIndeed,
    overrideJobspyCountryIndeed,
    jobspySites,
    defaultJobspySites,
    overrideJobspySites,
    jobspyLinkedinFetchDescription,
    defaultJobspyLinkedinFetchDescription,
    overrideJobspyLinkedinFetchDescription,
    showSponsorInfo,
    defaultShowSponsorInfo,
    overrideShowSponsorInfo,
    ...envSettings,
  } as AppSettings;
}