import { LOCAL_STORAGE_KEYS, useFlag } from 'common'
import { useMemo } from 'react'

import { type BannerId } from '@/components/ui/BannerStack/BannerStackProvider'
import { IS_PLATFORM } from '@/lib/constants'

export type FeaturePreview = {
  key: string
  name: string
  discussionsUrl?: string
  isNew: boolean
  /** If feature flag is only relevant for the hosted platform */
  isPlatformOnly: boolean
  /** If feature flag should be enabled by default for users, if not yet toggled before */
  isDefaultOptIn: boolean
  /** Visibility in the feature preview modal (For feature flagging a feature preview) */
  enabled: boolean
  /**
   * Forces the preview on for this user, whatever they previously chose — for a
   * preview that has become the default behavior. Overrides both `isDefaultOptIn`
   * and a stored opt-out, and takes away the ability to turn the preview back off.
   */
  isForced?: boolean
  /** Optional category that the feature preview falls under, defaults to "Others" in the UI otherwise */
  category?: 'observability' | 'database' | 'editors'
  /**
   * Where to send the user after enabling, to try the feature out. Omit if the
   * feature has no single destination (e.g. a global layout change).
   */
  getRoute?: (ref?: string) => string
  bannerId?: BannerId
}

export const useFeaturePreviews = (): FeaturePreview[] => {
  const isPlatformWebhooksEnabled = useFlag('platformWebhooks')
  const jitDbAccessEnabled = useFlag('jitDbAccess')
  const isMarketplaceEnabled = useFlag('marketplaceIntegrations')
  const isExplorerEnabled = useFlag('explorer')
  const isStorageVersioningEnabled = useFlag('storageVersioningPrivateAlpha')

  const isSqlEditorManualSaveForced = useFlag('sqlEditorManualSaveForced')

  return useMemo(() => {
    const previews: FeaturePreview[] = [
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_EXPLORER,
        name: 'Explorer & Notebooks',
        category: 'editors',
        discussionsUrl: 'https://github.com/orgs/supabase/discussions/49916',
        enabled: isExplorerEnabled,
        isNew: true,
        isPlatformOnly: true,
        isDefaultOptIn: false,
        getRoute: (ref?: string) => `/project/${ref}/explorer`,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_UNIFIED_LOGS,
        name: 'Updated Logs interface',
        category: 'observability',
        discussionsUrl: 'https://github.com/orgs/supabase/discussions/37234',
        enabled: true,
        isNew: true,
        isPlatformOnly: true,
        isDefaultOptIn: true,
        getRoute: (ref?: string) => `/project/${ref}/logs`,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_ADVISOR_RULES,
        name: 'Disable Advisor rules',
        discussionsUrl: undefined,
        enabled: true,
        isNew: false,
        isPlatformOnly: true,
        isDefaultOptIn: false,
        getRoute: (ref?: string) => `/project/${ref}/advisors/rules/security`,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_PG_DELTA_DIFF,
        name: 'PG Delta Diff',
        discussionsUrl: undefined,
        isNew: false,
        isPlatformOnly: true,
        isDefaultOptIn: true,
        enabled: true,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_PLATFORM_WEBHOOKS,
        name: 'Platform webhooks',
        discussionsUrl: undefined,
        isNew: false,
        isPlatformOnly: true,
        isDefaultOptIn: false,
        enabled: isPlatformWebhooksEnabled,
        getRoute: (ref?: string) => `/project/${ref}/settings/webhooks`,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_JIT_DB_ACCESS,
        name: 'Temporary database access',
        category: 'database',
        discussionsUrl: undefined,
        isNew: false,
        isPlatformOnly: true,
        isDefaultOptIn: false,
        enabled: jitDbAccessEnabled,
        getRoute: (ref?: string) => `/project/${ref}/database/settings`,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_CLS,
        name: 'Column-level privileges',
        category: 'database',
        discussionsUrl: 'https://github.com/orgs/supabase/discussions/20295',
        enabled: true,
        isNew: false,
        isPlatformOnly: false,
        isDefaultOptIn: false,
        getRoute: (ref?: string) => `/project/${ref}/database/column-privileges`,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_MARKETPLACE,
        name: 'One-Click Integrations',
        discussionsUrl: undefined,
        enabled: isMarketplaceEnabled,
        isNew: true,
        isPlatformOnly: false,
        isDefaultOptIn: true,
        getRoute: (ref?: string) => `/project/${ref}/integrations`,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_SQL_EDITOR_MANUAL_SAVE,
        category: 'editors',
        name: 'Disable snippet auto-saving',
        discussionsUrl: undefined,
        isNew: true,
        isPlatformOnly: true,
        isDefaultOptIn: false,
        enabled: true,
        // Manual saving is becoming the default for the SQL Editor. The preview
        // stays listed so users who lose their local storage can opt back in
        // before the rollout reaches them.
        isForced: isSqlEditorManualSaveForced,
      },
      {
        key: LOCAL_STORAGE_KEYS.UI_PREVIEW_STORAGE_VERSIONING,
        name: 'Storage versioning',
        discussionsUrl: undefined,
        isNew: true,
        isPlatformOnly: true,
        isDefaultOptIn: true,
        enabled: isStorageVersioningEnabled,
        getRoute: (ref?: string) => `/project/${ref}/storage/files`,
      },
    ]

    return previews.sort((a, b) => Number(b.isNew) - Number(a.isNew))
  }, [
    isSqlEditorManualSaveForced,
    isPlatformWebhooksEnabled,
    jitDbAccessEnabled,
    isMarketplaceEnabled,
    isExplorerEnabled,
    isStorageVersioningEnabled,
  ])
}

export type FeaturePreviewCategoryGroup = {
  category: FeaturePreview['category']
  previews: FeaturePreview[]
}

/**
 * The visible feature previews (respecting platform-only/enabled gating),
 * grouped by category in first-seen order, uncategorized previews last as a
 * final `category: undefined` group. Shared by the feature preview modal and
 * the Cmd+K "Feature previews" page so both list the exact same previews.
 */
export const useVisibleFeaturePreviewsByCategory = (): FeaturePreviewCategoryGroup[] => {
  const featurePreviews = useFeaturePreviews()

  return useMemo(() => {
    const previews = (
      IS_PLATFORM ? featurePreviews : featurePreviews.filter((preview) => !preview.isPlatformOnly)
    ).filter((preview) => preview.enabled)
    const categories = [...new Set(previews.map((preview) => preview.category).filter(Boolean))]

    return categories.concat(undefined).map((category) => ({
      category,
      previews: previews.filter((preview) => preview.category === category),
    }))
  }, [featurePreviews])
}