// End of third-party imports

import { SupportCategories } from '@supabase/shared-types/out/constants'
import {
  DocsSearchResultType as PageType,
  type DocsSearchResult as Page,
  type DocsSearchResultSection as PageSection,
} from 'common'
import dayjs from 'dayjs'
import { partition } from 'lodash'
import { Book, Github, Hash, MessageSquare } from 'lucide-react'
import {
  createLoader,
  createParser,
  createSerializer,
  parseAsString,
  type inferParserType,
  type UseQueryStatesKeysMap,
} from 'nuqs'

import { CATEGORY_OPTIONS, type ExtendedSupportCategories } from './Support.constants'
import { getProjectDetail } from '@/data/projects/project-detail-query'
import { DOCS_URL } from '@/lib/constants'
import type { Organization } from '@/types'

export const NO_PROJECT_MARKER = 'no-project'
export const NO_ORG_MARKER = 'no-org'

export const DISABLE_SUPPORT_ACCESS_CATEGORIES: ExtendedSupportCategories[] = [
  SupportCategories.ACCOUNT_DELETION,
  SupportCategories.SALES_ENQUIRY,
  SupportCategories.REFUND,
]

export function canAllowSupportAccess(
  category: ExtendedSupportCategories | undefined,
  projectRef: string
): boolean {
  return (
    !!category &&
    !DISABLE_SUPPORT_ACCESS_CATEGORIES.includes(category) &&
    projectRef !== NO_PROJECT_MARKER
  )
}

export const formatMessage = ({
  message,
  attachments = [],
  error,
}: {
  message: string
  attachments?: Array<string>
  error: string | null | undefined
}) => {
  const [harFiles, images] = partition(attachments, (x) => x.split('?token')[0].endsWith('.har'))
  const errorString = error != null ? `\n\nError: ${error}` : ''

  const imagesString = images.length > 0 ? `\n\nImage Attachments:\n${images.join('\n\n')}` : ''
  const harFilesString = harFiles.length > 0 ? `\n\nHAR Files:\n${harFiles.join('\n\n')}` : ''

  return `${message}${errorString}${imagesString}${harFilesString}`
}

export const formatStudioVersion = (commit: { commitSha: string; commitTime: string }): string => {
  const formattedTime =
    commit.commitTime === 'unknown'
      ? 'unknown time'
      : dayjs(commit.commitTime).format('YYYY-MM-DD HH:mm:ss Z')
  return `SHA ${commit.commitSha} deployed at ${formattedTime}`
}

export function getPageIcon(page: Page) {
  switch (page.type) {
    case PageType.Markdown:
    case PageType.Reference:
    case PageType.Integration:
      return <Book strokeWidth={1.5} className="mr-0! w-4! h-4!" />
    case PageType.GithubDiscussion:
      return <Github strokeWidth={1.5} className="mr-0! w-4! h-4!" />
    default:
      throw new Error(`Unknown page type '${page.type}'`)
  }
}

export function getPageSectionIcon(page: Page) {
  switch (page.type) {
    case PageType.Markdown:
    case PageType.Reference:
    case PageType.Integration:
      return <Hash strokeWidth={1.5} className="mr-0! w-4! h-4!" />
    case PageType.GithubDiscussion:
      return <MessageSquare strokeWidth={1.5} className="mr-0! w-4! h-4!" />
    default:
      throw new Error(`Unknown page type '${page.type}'`)
  }
}

export function generateLink(pageType: PageType, link: string): string {
  switch (pageType) {
    case PageType.Markdown:
    case PageType.Reference:
      return `${DOCS_URL}${link}`
    case PageType.Integration:
      return `https://supabase.com${link}`
    case PageType.GithubDiscussion:
      return link
    default:
      throw new Error(`Unknown page type '${pageType}'`)
  }
}

export function formatSectionUrl(page: Page, section: PageSection): string {
  switch (page.type) {
    case PageType.Markdown:
    case PageType.GithubDiscussion:
      return `${generateLink(page.type, page.path)}#${section.slug ?? ''}`
    case PageType.Reference:
      return `${generateLink(page.type, page.path)}/${section.slug ?? ''}`
    case PageType.Integration:
      return generateLink(page.type, page.path) // Assuming no section slug for Integration pages
    default:
      throw new Error(`Unknown page type '${page.type}'`)
  }
}

export function getOrgSubscriptionPlan(orgs: Organization[] | undefined, orgSlug: string | null) {
  if (!orgs || !orgSlug) return undefined

  const selectedOrg = orgs?.find((org) => org.slug === orgSlug)
  const subscriptionPlanId = selectedOrg?.plan.id
  return subscriptionPlanId
}

const categoryOptionsLower = CATEGORY_OPTIONS.map((option) => option.value.toLowerCase())
const parseAsCategoryOption = createParser({
  parse(queryValue) {
    const lowerValue = queryValue.toLowerCase()
    const matchingIndex = categoryOptionsLower.indexOf(lowerValue)
    return matchingIndex !== -1 ? CATEGORY_OPTIONS[matchingIndex].value : null
  },
  serialize(value) {
    return value ?? null
  },
})

const supportFormUrlState = {
  projectRef: parseAsString.withDefault(''),
  orgSlug: parseAsString.withDefault(''),
  category: parseAsCategoryOption,
  subject: parseAsString.withDefault(''),
  message: parseAsString.withDefault(''),
  error: parseAsString,
  /** Sentry event ID */
  sid: parseAsString,
} satisfies UseQueryStatesKeysMap
export type SupportFormUrlKeys = inferParserType<typeof supportFormUrlState>

export const loadSupportFormInitialParams = createLoader(supportFormUrlState)

export function loadSupportFormInitialParamsFromObject(
  initialParams: Partial<SupportFormUrlKeys>
): SupportFormUrlKeys {
  const normalizedParams = Object.fromEntries(
    Object.entries(initialParams).flatMap(([key, value]) =>
      value == null ? [] : [[key, String(value)]]
    )
  )

  return loadSupportFormInitialParams(normalizedParams)
}

const serializeSupportFormInitialParams = createSerializer(supportFormUrlState)

export function createSupportFormUrl(initialParams: Partial<SupportFormUrlKeys>) {
  const serializedParams = serializeSupportFormInitialParams(initialParams)
  const query = serializedParams && serializedParams !== '?' ? serializedParams : ''
  return `/support/new${query}`
}

/**
 * Determines which organization to select based on combination of:
 * - Selected project (if any)
 * - URL param (if any)
 * - Fallback
 */
export async function selectInitialOrgAndProject({
  projectRef,
  orgSlug,
  orgs,
}: {
  projectRef: string | null
  orgSlug: string | null
  orgs: Organization[]
}): Promise<{ projectRef: string | null; orgSlug: string | null }> {
  if (projectRef) {
    try {
      const projectDetails = await getProjectDetail({ ref: projectRef })
      const projectOrg = orgs.find((o) => o.id === projectDetails?.organization_id)
      if (projectOrg?.slug) {
        return {
          projectRef,
          orgSlug: projectOrg.slug,
        }
      }
    } catch {
      // Can safely ignore, fall through to the orgSlug fallback below
    }
  }

  // Reached when there's no projectRef, or the project lookup above failed to
  // resolve a known org (e.g. the Management API request errored). Returning
  // `projectRef` here (rather than hardcoding `null`) preserves it when we
  // still have one, instead of silently discarding it.
  if (orgSlug) {
    const org = orgs.find((o) => o.slug === orgSlug)
    if (org?.slug) {
      return {
        projectRef,
        orgSlug: org.slug,
      }
    }
  }

  return {
    projectRef: null,
    orgSlug: orgs[0]?.slug ?? null,
  }
}

// Chrome blocks scrollIntoView (triggered by .focus()) when overflow-x: hidden and
// overflow-y: auto are on the same element. Manually scroll the sidebar instead.
export function scrollToRequiredField(formId: string, fieldName: string) {
  const form = document.getElementById(formId)
  if (!form) return

  // Selects use data-support-field since they have no name attr; inputs/textareas use name.
  const el =
    form.querySelector(`[data-support-field="${fieldName}"]`) ??
    form.querySelector(`[name="${fieldName}"]`)
  if (!(el instanceof HTMLElement)) return

  const scrollContainer = findScrollableParent(el)
  if (scrollContainer) {
    const offset = el.getBoundingClientRect().top - scrollContainer.getBoundingClientRect().top - 80
    scrollContainer.scrollTo({ top: scrollContainer.scrollTop + offset, behavior: 'smooth' })
  }

  el.focus({ preventScroll: true })
}

function findScrollableParent(el: HTMLElement): HTMLElement | null {
  let parent = el.parentElement
  while (parent && parent !== document.body) {
    const { overflowY } = window.getComputedStyle(parent)
    if (overflowY === 'auto' || overflowY === 'scroll') return parent
    parent = parent.parentElement
  }
  return null
}