import { chromium, request } from 'playwright'
import { mkdir, readFile, writeFile } from 'node:fs/promises'
import path from 'node:path'

function parseArguments(argv) {
  const parsed = {
    baseUrl: process.env.GE_INTEL_BASE_URL || 'http://127.0.0.1:1202',
    goldenManifest: process.env.GEOINTEL_GOLDEN_AREA_MANIFEST || '../artifacts/rc8-golden-areas.json',
    output: process.env.GEOINTEL_RELEASE_JOURNEY_OUTPUT || '../artifacts/rc8-release-journeys',
  }
  for (let index = 0; index < argv.length; index += 1) {
    const value = argv[index]
    if (value === '--base-url') parsed.baseUrl = argv[++index]
    else if (value === '--golden-manifest') parsed.goldenManifest = argv[++index]
    else if (value === '--output') parsed.output = argv[++index]
    else throw new Error(`Unknown release journey argument: ${value}`)
  }
  parsed.baseUrl = parsed.baseUrl.replace(/\/$/, '')
  return parsed
}

function assert(condition, message) {
  if (!condition) throw new Error(message)
}

async function responseJson(response, label, { envelope = true } = {}) {
  const text = await response.text()
  let payload
  try {
    payload = JSON.parse(text)
  } catch {
    throw new Error(`${label} returned non-JSON data: ${text.slice(0, 300)}`)
  }
  if (!response.ok()) {
    throw new Error(`${label} failed with HTTP ${response.status()}: ${JSON.stringify(payload)}`)
  }
  if (!envelope) return payload
  assert(payload && Object.hasOwn(payload, 'data'), `${label} did not return the canonical data envelope`)
  return payload.data
}

async function apiCall(api, method, url, data, options = {}) {
  const response = await api.fetch(url, {
    method,
    data,
    timeout: options.timeout || 60_000,
  })
  return responseJson(response, options.label || `${method} ${url}`, options)
}

function bboxForArea(area) {
  return {
    min_x: area.bbox.minx,
    min_y: area.bbox.miny,
    max_x: area.bbox.maxx,
    max_y: area.bbox.maxy,
    crs: 'EPSG:4326',
  }
}

function coverageBbox(area) {
  return {
    minx: area.bbox.minx,
    miny: area.bbox.miny,
    maxx: area.bbox.maxx,
    maxy: area.bbox.maxy,
  }
}

async function waitUntilEnabled(locator, timeout = 20_000) {
  const started = Date.now()
  while (Date.now() - started < timeout) {
    if (await locator.isEnabled().catch(() => false)) return
    await new Promise((resolve) => setTimeout(resolve, 100))
  }
  throw new Error(`Control did not become enabled: ${await locator.getAttribute('aria-label').catch(() => '')}`)
}

async function selectProject(page, projectId) {
  await page.getByTestId('workspace-nav-data').click()
  await page.getByTestId('project-panel').waitFor({ state: 'visible' })
  const selector = page.getByTestId(`project-select-${projectId}`)
  if (!await selector.isVisible().catch(() => false)) {
    const management = page.locator('details.technical-management-block')
    if (!await management.getAttribute('open')) {
      await management.locator(':scope > summary').click()
    }
    const alternatives = management.locator('details.technical-run-list')
    if (await alternatives.count() && !await alternatives.getAttribute('open')) {
      await alternatives.locator(':scope > summary').click()
    }
  }
  await selector.waitFor({ state: 'visible', timeout: 15_000 })
  const dataResponse = page.waitForResponse(
    (response) => response.url().includes(`/api/v1/projects/${projectId}/datasets`) && response.ok(),
    { timeout: 30_000 },
  )
  await selector.click()
  await dataResponse
}

async function runApiJourneys(api, goldenManifest, evidence) {
  const ready = await apiCall(api, 'GET', '/health/ready', undefined, {
    label: 'readiness',
    envelope: false,
  })
  assert(ready.status === 'ok', `Runtime readiness is ${ready.status}`)
  evidence.runtime = {
    build_sha: ready.build_sha,
    build_time: ready.build_time,
    postgis: ready.postgis,
    migration: ready.migration,
  }

  const projects = await apiCall(api, 'GET', '/api/v1/projects?limit=200')
  const projectsByName = new Map(projects.items.map((project) => [project.name, project]))
  const nationalProject = projectsByName.get('Belgium and North Sea Workbench')
  const molProject = projectsByName.get('Mol Municipality Workbench')
  assert(nationalProject, 'National release workspace is missing')
  assert(molProject, 'Mol regression workspace is missing')

  const coverageResults = []
  for (const area of goldenManifest.areas) {
    const result = await apiCall(api, 'POST', '/api/v1/external/coverage/resolve', {
      project_id: nationalProject.id,
      bbox: coverageBbox(area),
      themes: ['admin', 'buildings', 'population', 'bathymetry'],
    })
    for (const zone of area.expected_zones) {
      assert(result.intersected_zones.includes(zone), `${area.key} did not resolve expected zone ${zone}`)
    }
    coverageResults.push({
      key: area.key,
      zones: result.intersected_zones,
      outside_supported_scope: result.outside_supported_scope,
      statuses: result.items.map((item) => ({
        zone: item.zone,
        theme: item.theme,
        status: item.status,
      })),
      warnings: result.warnings,
    })
  }
  evidence.coverage = coverageResults

  const outsideCoverage = await apiCall(api, 'POST', '/api/v1/external/coverage/resolve', {
    project_id: nationalProject.id,
    bbox: { minx: 10.0, miny: 55.0, maxx: 10.1, maxy: 55.1 },
    themes: ['admin'],
  })
  assert(outsideCoverage.outside_supported_scope, 'Outside-scope selection was not marked outside')
  assert(outsideCoverage.intersected_zones.length === 0, 'Outside-scope selection resolved a Belgian zone')

  const northSeaArea = goldenManifest.areas.find((area) => area.key === 'north_sea_multi_zone')
  const northSeaCoverage = coverageResults.find((result) => result.key === 'north_sea_multi_zone')
  assert(northSeaArea && northSeaCoverage, 'North Sea golden Area evidence is missing')
  assert(
    northSeaCoverage.statuses.some((item) => item.theme === 'population' && item.status === 'unsupported'),
    'Unsupported North Sea population metric was not explicit',
  )
  assert(
    coverageResults.some((result) => result.statuses.some((item) => item.status === 'partial')),
    'No golden selection exercised partial source coverage',
  )
  evidence.edge_cases = {
    outside_scope: {
      zones: outsideCoverage.intersected_zones,
      warning: outsideCoverage.warnings[0],
    },
    partial_coverage: true,
    unsupported_north_sea_population: true,
  }

  const molArea = goldenManifest.areas.find((area) => area.key === 'mol_municipality')
  assert(molArea, 'Mol golden Area evidence is missing')
  assert(molArea.source_area_id, 'Mol regression source Area evidence is missing')
  const temporalSeries = await apiCall(api, 'GET', `/api/v1/projects/${molProject.id}/temporal/series`)
  const forestSeries = temporalSeries.items.find(
    (series) => series.temporal_series_key === 'department-omgeving:land-use:forest:mol',
  )
  assert(forestSeries && forestSeries.datasets.length >= 2, 'Mol forest history has fewer than two snapshots')
  const earlier = forestSeries.datasets[0]
  const later = forestSeries.datasets[forestSeries.datasets.length - 1]
  const temporal = await apiCall(api, 'POST', `/api/v1/projects/${molProject.id}/temporal/compare`, {
    earlier_dataset_id: earlier.id,
    later_dataset_id: later.id,
    bbox: bboxForArea(molArea),
    area_id: molArea.source_area_id,
    preview_limit: 100,
  }, { timeout: 120_000, label: 'Mol temporal comparison' })
  assert(temporal.metric && Number.isFinite(temporal.metric.earlier_value), 'Temporal comparison has no governed metric')
  evidence.temporal = {
    series: temporal.temporal_series_key,
    earlier: temporal.earlier,
    later: temporal.later,
    metric: temporal.metric,
    warning_count: temporal.warnings.length,
  }

  const molDatasets = await apiCall(api, 'GET', `/api/v1/projects/${molProject.id}/datasets?limit=200`)
  const exportDataset = molDatasets.items.find(
    (dataset) => dataset.source_name === 'statbel' && dataset.dataset_type === 'vector',
  )
  assert(exportDataset, 'No bounded Mol vector dataset is available for export')
  const exported = await apiCall(api, 'POST', '/api/v1/exports/map-result', {
    project_id: molProject.id,
    mode: 'current',
    bbox: bboxForArea(molArea),
    dataset_id: exportDataset.id,
    area_id: molArea.source_area_id,
    theme_id: 'population',
    name: 'RC8 Mol population map result',
  }, { timeout: 120_000, label: 'bounded map export' })
  assert(exported.status === 'ready', `Map result export status is ${exported.status}`)
  const exportContent = await apiCall(api, 'GET', `/api/v1/exports/${exported.export_id}/content`)
  assert(exportContent.content?.type === 'FeatureCollection', 'Persisted map export is not GeoJSON')
  evidence.export = {
    export_id: exported.export_id,
    export_type: exported.export_type,
    feature_count: exportContent.content.features.length,
  }

  const assistantStatus = await apiCall(api, 'GET', '/api/v1/assistant/status')
  assert(assistantStatus.enabled && assistantStatus.reachable, 'Configured Ollama assistant is not reachable')
  evidence.assistant = {
    status: assistantStatus.status,
    model: assistantStatus.default_model,
    api_context_verified: false,
  }

  const demo = await apiCall(api, 'POST', '/api/v1/demo/workflow', {})
  assert(demo.status === 'ready' && demo.raster_dataset_id, 'Demo PostGIS fixture is not ready')
  const modelAssets = await apiCall(api, 'GET', '/api/v1/detection/model-assets')
  const preferredAsset = modelAssets.items.find((asset) => asset.active)
    || modelAssets.items.find((asset) => asset.status === 'available')
  assert(preferredAsset, 'No local YOLO model asset is available')
  evidence.detection = {
    project_id: demo.project_id,
    raster_dataset_id: demo.raster_dataset_id,
    model_asset_id: preferredAsset.model_asset_id,
    analysis_run_id: null,
    status: 'pending_browser_run',
  }

  return {
    nationalProject,
    molProject,
    molArea,
    demo,
    preferredAsset,
  }
}

async function runBrowserJourneys(baseUrl, browserData, goldenManifest, outputDir, evidence) {
  const browser = await chromium.launch({ headless: true })
  const page = await browser.newPage({ viewport: { width: 1920, height: 1080 } })
  const consoleErrors = []
  const failedRequests = []
  let expectedCoverageFailure = false
  let expectedCoverageConsoleErrors = 0

  page.on('console', (message) => {
    if (message.type() !== 'error') return
    if (
      expectedCoverageConsoleErrors > 0
      && /Failed to load resource: net::ERR_CONNECTION_FAILED/i.test(message.text())
    ) {
      expectedCoverageConsoleErrors -= 1
      return
    }
    consoleErrors.push(message.text())
  })
  page.on('pageerror', (error) => consoleErrors.push(error.message))
  page.on('requestfailed', (requestValue) => {
    if (requestValue.url().startsWith(baseUrl) && requestValue.url().includes('/api/')) {
      if (!(expectedCoverageFailure && requestValue.url().includes('/external/coverage/resolve'))) {
        failedRequests.push(`${requestValue.method()} ${requestValue.url()}: ${requestValue.failure()?.errorText}`)
      }
    }
  })
  page.on('response', (response) => {
    if (response.url().startsWith(baseUrl) && response.url().includes('/api/') && response.status() >= 500) {
      failedRequests.push(`${response.request().method()} ${response.url()}: HTTP ${response.status()}`)
    }
  })

  try {
    await page.goto(baseUrl, { waitUntil: 'networkidle', timeout: 60_000 })
    await page.getByTestId('map-workspace').waitFor({ state: 'visible', timeout: 30_000 })
    await page.screenshot({ path: path.join(outputDir, '01-belgium-map.png') })

    await page.getByRole('button', { name: 'Geavanceerde werkbank' }).click()
    await page.getByTestId('map-area-select').waitFor({ state: 'visible' })
    const nationalAreas = goldenManifest.areas
    const browserCoverage = []
    for (const area of nationalAreas) {
      await page.getByTestId('map-area-select').selectOption(area.area_id)
      const useAreaButton = page.getByRole('button', { name: 'Begrenzing werkgebied gebruiken' })
      await waitUntilEnabled(useAreaButton)
      const coverageResponse = page.waitForResponse(
        (response) => response.url().includes('/api/v1/external/coverage/resolve') && response.ok(),
        { timeout: 30_000 },
      )
      await useAreaButton.click()
      const response = await coverageResponse
      const coverage = await responseJson(response, `browser coverage ${area.key}`)
      for (const zone of area.expected_zones) {
        assert(coverage.intersected_zones.includes(zone), `Browser journey ${area.key} missed ${zone}`)
      }
      await page.locator('.coverage-resolution-surface').waitFor({ state: 'visible' })
      browserCoverage.push({ key: area.key, zones: coverage.intersected_zones })
    }
    evidence.browser.coverage = browserCoverage
    await page.screenshot({ path: path.join(outputDir, '02-national-coverage.png') })

    const providerFailureArea = nationalAreas[0]
    expectedCoverageFailure = true
    expectedCoverageConsoleErrors = 1
    await page.route('**/api/v1/external/coverage/resolve', (route) => route.abort('connectionfailed'))
    await page.getByTestId('map-area-select').selectOption(providerFailureArea.area_id)
    const failedUseAreaButton = page.getByRole('button', { name: 'Begrenzing werkgebied gebruiken' })
    await waitUntilEnabled(failedUseAreaButton)
    await failedUseAreaButton.click()
    await page.locator('.coverage-resolution-surface .error').waitFor({ state: 'visible', timeout: 15_000 })
    evidence.browser.provider_failure_state = await page.locator('.coverage-resolution-surface .error').innerText()
    await page.unroute('**/api/v1/external/coverage/resolve')
    expectedCoverageFailure = false

    await selectProject(page, browserData.molProject.id)
    await page.getByTestId('workspace-nav-map').click()
    const backToExplorer = page.getByRole('button', { name: 'Terug naar gebiedsverkenner' })
    if (await backToExplorer.isVisible().catch(() => false)) await backToExplorer.click()
    await page.getByLabel('Werkgebied').selectOption(browserData.molArea.source_area_id)
    const forestTheme = page.getByRole('button', { name: /^Bos & groen/ })
    await waitUntilEnabled(forestTheme)
    await forestTheme.click()
    const fullArea = page.getByRole('button', { name: 'Volledig werkgebied' })
    await waitUntilEnabled(fullArea)
    await fullArea.click()
    await page.locator('.geo-primary-metrics').waitFor({ state: 'visible', timeout: 120_000 })
    const currentMetrics = await page.locator('.geo-primary-metrics').innerText()
    assert(/ha|km2|objecten|inwoners/i.test(currentMetrics), 'Mol map did not render a governed metric')
    const sourceSummary = await page.locator('.geo-source-summary').innerText()
    assert(!/Geen databron beschikbaar/i.test(sourceSummary), 'Mol map provenance has no active source')
    evidence.browser.current_metric = currentMetrics
    evidence.browser.current_provenance = sourceSummary
    await page.screenshot({ path: path.join(outputDir, '03-mol-current-metric.png') })

    await page.getByRole('tab', { name: 'Evolutie' }).click()
    const evolutionForest = page.getByRole('button', { name: /^Bos & groen/ })
    await waitUntilEnabled(evolutionForest)
    await evolutionForest.click()
    const compareResponse = page.waitForResponse(
      (response) => response.url().includes('/temporal/compare') && response.ok(),
      { timeout: 120_000 },
    )
    await page.getByRole('button', { name: 'Volledig werkgebied' }).click()
    await compareResponse
    await page.locator('.geo-temporal-metrics').waitFor({ state: 'visible', timeout: 120_000 })
    evidence.browser.temporal_metric = await page.locator('.geo-temporal-metrics').innerText()
    await page.screenshot({ path: path.join(outputDir, '04-mol-evolution.png') })

    const exportResponsePromise = page.waitForResponse(
      (response) => response.url().includes('/api/v1/exports/map-result') && response.ok(),
      { timeout: 120_000 },
    )
    await page.getByRole('button', { name: 'Bewaar in downloads' }).click()
    const browserExportResponse = await exportResponsePromise
    const browserExport = await responseJson(browserExportResponse, 'browser map export')
    evidence.browser.export_id = browserExport.export_id
    await page.getByTestId('workspace-nav-exports').waitFor({ state: 'visible' })
    await page.screenshot({ path: path.join(outputDir, '05-export-center.png') })

    await page.getByTestId('workspace-nav-assistant').click()
    await page.getByTestId('geo-assistant-panel').waitFor({ state: 'visible' })
    const question = 'Vat de gemeten evolutie en belangrijkste bronnen voor dit geselecteerde gebied samen in maximaal drie zinnen.'
    await page.getByLabel('Vraag over het actieve gebied').fill(question)
    const assistantResponsePromise = page.waitForResponse(
      (response) => response.url().includes('/assistant/query') && response.ok(),
      { timeout: 240_000 },
    )
    await page.getByRole('button', { name: 'Stel vraag' }).click()
    const assistantResponse = await assistantResponsePromise
    const assistant = await responseJson(assistantResponse, 'browser Ollama query')
    assert(assistant.answer?.trim().length > 20, 'Ollama returned no usable answer')
    await page.locator('.assistant-message-assistant').waitFor({ state: 'visible', timeout: 30_000 })
    evidence.assistant.api_context_verified = true
    evidence.assistant.answer_length = assistant.answer.length
    evidence.assistant.context_metric_count = assistant.context_metrics.length
    evidence.assistant.temporal_series_count = assistant.temporal_series.length
    evidence.assistant.source_dataset_count = assistant.source_dataset_ids.length
    await page.screenshot({ path: path.join(outputDir, '06-ollama-context.png') })

    await selectProject(page, browserData.demo.project_id)
    await page.getByTestId('workspace-nav-ai').click()
    const detectionPanel = page.locator('.detection-lab-shell')
    await detectionPanel.waitFor({ state: 'visible', timeout: 30_000 })
    const detectionRunSelects = detectionPanel.locator('.lab-form-grid select')
    await detectionRunSelects.first().waitFor({ state: 'visible', timeout: 30_000 })
    await detectionRunSelects.nth(0).selectOption(browserData.demo.raster_dataset_id)
    await detectionRunSelects.nth(1).selectOption('yolo-configured')
    const localModelDetails = detectionPanel.locator('details[aria-label="Lokale modelkeuze"]')
    if (!await localModelDetails.getAttribute('open')) {
      await localModelDetails.locator(':scope > summary').click()
    }
    await localModelDetails.locator('select').selectOption(browserData.preferredAsset.model_asset_id)
    await detectionPanel.locator('.ai-lab-run-surface .lab-form-grid input[type="number"]').fill('0.50')
    const detectionAction = detectionPanel.getByRole('button', { name: 'Gebouwen zoeken en op kaart tonen' })
    await waitUntilEnabled(detectionAction, 30_000)
    const detectionResponsePromise = page.waitForResponse(
      (response) => response.url().includes('/api/v1/detection/run') && response.ok(),
      { timeout: 240_000 },
    )
    await detectionAction.click()
    const detectionResponse = await detectionResponsePromise
    const detection = await responseJson(detectionResponse, 'browser configured YOLO run')
    assert(detection.status === 'success', `Configured YOLO browser run status is ${detection.status}`)
    evidence.detection.analysis_run_id = detection.analysis_run_id
    evidence.detection.job_id = detection.job_id
    evidence.detection.detection_count = detection.detection_count
    evidence.detection.status = detection.status
    await page.getByTestId('map-workspace').waitFor({ state: 'visible', timeout: 60_000 })
    const postDetectionMapText = await page.getByTestId('map-workspace').innerText()
    assert(
      /detectie|gebouw|analyse/i.test(postDetectionMapText),
      'Successful detection did not hand its persisted result back to the map',
    )
    evidence.detection.map_handoff_verified = true
    await page.screenshot({ path: path.join(outputDir, '07-configured-yolo.png') })

    const frameworkErrorText = await page.locator('body').innerText()
    assert(
      !/Unhandled Runtime Error|Cannot read properties|ReferenceError|TypeError:/i.test(frameworkErrorText),
      'A frontend runtime error is visible',
    )
  } finally {
    evidence.browser.console_errors = consoleErrors
    evidence.browser.failed_requests = failedRequests
    await browser.close()
  }

  assert(consoleErrors.length === 0, `Browser console errors: ${consoleErrors.join('\n')}`)
  assert(failedRequests.length === 0, `Unexpected API failures: ${failedRequests.join('\n')}`)
}

async function main() {
  const args = parseArguments(process.argv.slice(2))
  const goldenManifest = JSON.parse(await readFile(args.goldenManifest, 'utf8'))
  assert(goldenManifest.area_count === 7, `Expected seven golden Areas, got ${goldenManifest.area_count}`)
  await mkdir(args.output, { recursive: true })
  const evidence = {
    schema_version: 1,
    started_at: new Date().toISOString(),
    base_url: args.baseUrl,
    golden_area_manifest: path.resolve(args.goldenManifest),
    runtime: null,
    coverage: [],
    edge_cases: {},
    temporal: null,
    export: null,
    assistant: null,
    detection: null,
    browser: {
      coverage: [],
      provider_failure_state: null,
      current_metric: null,
      current_provenance: null,
      temporal_metric: null,
      export_id: null,
      console_errors: [],
      failed_requests: [],
    },
    status: 'running',
  }
  const evidencePath = path.join(args.output, 'manifest.json')
  const api = await request.newContext({ baseURL: args.baseUrl })
  try {
    const browserData = await runApiJourneys(api, goldenManifest, evidence)
    await runBrowserJourneys(args.baseUrl, browserData, goldenManifest, args.output, evidence)
    evidence.status = 'passed'
    evidence.completed_at = new Date().toISOString()
  } catch (error) {
    evidence.status = 'failed'
    evidence.completed_at = new Date().toISOString()
    evidence.error = error instanceof Error ? error.stack || error.message : String(error)
    throw error
  } finally {
    await api.dispose()
    await writeFile(evidencePath, `${JSON.stringify(evidence, null, 2)}\n`, 'utf8')
    console.log(`Release journey evidence: ${evidencePath}`)
  }
  console.log('RC8 Belgium/North Sea release journeys passed')
}

main().catch((error) => {
  console.error(error instanceof Error ? error.stack || error.message : error)
  process.exit(1)
})