import { useMutation, useQuery, useQueryClient } from '@tanstack/react-query'
import { api } from './client'

export interface DashboardScope {
  city?: string
  client?: string
  object_ids?: number[]
  tag_ids?: number[]
}

export type DashboardAvailabilityWindow = '24h' | '3d' | '7d'

export interface DashboardCheckDefinition {
  check_key: string
  enabled: boolean
  interval_sec_default: number
  plugin_action: string
  categories: string[]
  timeout_sec: number
  concurrency: number
  updated_at: string
}

export interface DashboardObjectOverride {
  object_id: number
  check_key: string
  enabled_override: boolean | null
  interval_sec_override: number | null
  categories_override: string[] | null
  updated_at: string
}

export interface DashboardMonitorStatus {
  status: string
  run_type: string | null
  scope: Record<string, unknown> | null
  started_at: string | null
  finished_at: string | null
  last_success_at: string | null
  last_error: string | null
  last_counts: Record<string, unknown> | null
}

export interface DashboardObjectPolicy {
  object_id: number
  mode: 'inherit' | 'include' | 'exclude'
  updated_at: string
}

export interface DashboardTagPolicy {
  tag_id: number
  enabled: boolean
  updated_at: string
}

export interface DashboardPolicyResponse {
  object_policies: DashboardObjectPolicy[]
  tag_policies: DashboardTagPolicy[]
}

export interface DashboardObjectCheckSummary {
  status_counts: Record<string, number>
  last_checked_at: string | null
  max_age_sec: number | null
}

export interface DashboardObjectSummary {
  object_id: number
  object_name: string
  city: string | null
  client: string | null
  allowed: boolean
  monitor_mode: 'inherit' | 'include' | 'exclude'
  inclusion_reason: string
  device_count: number
  checks: Record<string, DashboardObjectCheckSummary>
  health_score: number | null
}

export interface DashboardHomeSummary {
  generated_at: string
  scope: DashboardScope
  totals: Record<string, number>
  checks_meta: DashboardCheckDefinition[]
  objects: DashboardObjectSummary[]
  problem_objects: DashboardObjectSummary[]
  included_count: number
  excluded_count: number
  included_objects: DashboardObjectSummary[]
  excluded_objects: DashboardObjectSummary[]
}

export interface DashboardDeviceNOCItem {
  device_id: number
  object_id: number
  rack_id: number | null
  rack_name: string | null
  ip: string
  hostname: string | null
  category: string
  role: string | null
  status: string | null
  monitor_enabled: boolean
  last_seen: string | null
  last_ping_ms: number | null
  ping_status: string
  ping_checked_at: string | null
  ping_age_sec: number | null
  ping_fresh: boolean
  disk_status: string | null
  disk_max_pct: number | null
  has_problem: boolean
}

export interface DashboardObjectSummaryResponse {
  generated_at: string
  scope: DashboardScope
  object: DashboardObjectSummary
  totals: Record<string, number>
  checks_meta: DashboardCheckDefinition[]
  top_problem_devices: DashboardDeviceNOCItem[]
}

export interface DashboardObjectDevicesResponse {
  generated_at: string
  scope: DashboardScope
  object_id: number
  devices: DashboardDeviceNOCItem[]
}

export interface DashboardAvailabilityPoint {
  bucket_start: string
  bucket_end: string
  availability_pct: number | null
  samples: number
  online: number
  offline: number
}

export interface DashboardAvailabilityInterval {
  status: string
  started_at: string
  ended_at: string
  duration_sec: number
}

export interface DashboardDeviceAvailability {
  device_id: number
  ip: string
  hostname: string | null
  availability_pct: number | null
  samples: number
  online: number
  offline: number
  last_checked_at: string | null
  last_status: string | null
  last_ping_ms: number | null
  series: DashboardAvailabilityPoint[]
  intervals: DashboardAvailabilityInterval[]
}

export interface DashboardObjectAvailabilityResponse {
  generated_at: string
  object_id: number
  window: DashboardAvailabilityWindow
  start_at: string
  end_at: string
  bucket_sec: number
  overall_availability_pct: number | null
  overall_series: DashboardAvailabilityPoint[]
  devices: DashboardDeviceAvailability[]
  insufficient_data: boolean
}

export interface DashboardChecksResponse {
  checks: DashboardCheckDefinition[]
  object_overrides: DashboardObjectOverride[]
}

export const useDashboardHomeSummary = (scope: DashboardScope) =>
  useQuery({
    queryKey: ['dashboard-home-summary', scope],
    queryFn: () =>
      api
        .get<DashboardHomeSummary>('/api/v1/dashboard/home-summary', { params: scope })
        .then((r) => r.data),
    refetchInterval: 30_000,
  })

export const useDashboardObjectSummary = (objectId: number, scope: DashboardScope) =>
  useQuery({
    queryKey: ['dashboard-object-summary', objectId, scope],
    queryFn: () =>
      api
        .get<DashboardObjectSummaryResponse>(`/api/v1/dashboard/object/${objectId}/summary`, { params: scope })
        .then((r) => r.data),
    enabled: Number.isFinite(objectId) && objectId > 0,
    refetchInterval: 30_000,
  })

export const useDashboardObjectDevices = (objectId: number, scope: DashboardScope) =>
  useQuery({
    queryKey: ['dashboard-object-devices', objectId, scope],
    queryFn: () =>
      api
        .get<DashboardObjectDevicesResponse>(`/api/v1/dashboard/object/${objectId}/devices`, { params: scope })
        .then((r) => r.data),
    enabled: Number.isFinite(objectId) && objectId > 0,
    refetchInterval: 30_000,
  })

export const useDashboardObjectAvailability = (
  objectId: number,
  window: DashboardAvailabilityWindow,
  deviceIds?: number[],
  compact?: boolean
) =>
  useQuery({
    queryKey: ['dashboard-object-availability', objectId, window, deviceIds, compact],
    queryFn: () =>
      api
        .get<DashboardObjectAvailabilityResponse>(`/api/v1/dashboard/object/${objectId}/availability`, {
          params: { window, device_ids: deviceIds, compact: compact ?? false },
        })
        .then((r) => r.data),
    enabled:
      Number.isFinite(objectId) &&
      objectId > 0 &&
      (deviceIds == null || deviceIds.length > 0),
    refetchInterval: 45_000,
  })

export const useDashboardMonitorStatus = () =>
  useQuery({
    queryKey: ['dashboard-monitor-status'],
    queryFn: () =>
      api
        .get<DashboardMonitorStatus>('/api/v1/dashboard/monitor/status')
        .then((r) => r.data),
    refetchInterval: 10_000,
  })

export const useDashboardRunNow = () => {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: (body: DashboardScope & { force?: boolean }) =>
      api.post('/api/v1/dashboard/monitor/run', body).then((r) => r.data),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: ['dashboard-monitor-status'] })
      qc.invalidateQueries({ queryKey: ['dashboard-home-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-devices'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-availability'] })
    },
  })
}

export const useDashboardPolicy = () =>
  useQuery({
    queryKey: ['dashboard-policy'],
    queryFn: () =>
      api
        .get<DashboardPolicyResponse>('/api/v1/dashboard/monitor/policy')
        .then((r) => r.data),
  })

export const usePatchDashboardObjectPolicy = () => {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: (body: Array<{ object_id: number; mode: 'inherit' | 'include' | 'exclude' }>) =>
      api.patch('/api/v1/dashboard/monitor/policy/objects', body).then((r) => r.data),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: ['dashboard-policy'] })
      qc.invalidateQueries({ queryKey: ['dashboard-home-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-summary'] })
    },
  })
}

export const usePatchDashboardTagPolicy = () => {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: (body: Array<{ tag_id: number; enabled: boolean }>) =>
      api.patch('/api/v1/dashboard/monitor/policy/tags', body).then((r) => r.data),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: ['dashboard-policy'] })
      qc.invalidateQueries({ queryKey: ['dashboard-home-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-summary'] })
    },
  })
}

export const useDashboardChecks = () =>
  useQuery({
    queryKey: ['dashboard-checks'],
    queryFn: () =>
      api
        .get<DashboardChecksResponse>('/api/v1/dashboard/checks')
        .then((r) => r.data),
  })

export const usePatchDashboardChecks = () => {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: (
      body: Array<{
        check_key: string
        enabled?: boolean
        interval_sec_default?: number
        categories?: string[]
        timeout_sec?: number
        concurrency?: number
      }>
    ) => api.patch('/api/v1/dashboard/checks', body).then((r) => r.data),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: ['dashboard-checks'] })
      qc.invalidateQueries({ queryKey: ['dashboard-home-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-devices'] })
    },
  })
}

export const usePatchDashboardObjectOverrides = () => {
  const qc = useQueryClient()
  return useMutation({
    mutationFn: (
      body: Array<{
        object_id: number
        check_key: string
        enabled_override?: boolean | null
        interval_sec_override?: number | null
        categories_override?: string[] | null
      }>
    ) => api.patch('/api/v1/dashboard/checks/object-overrides', body).then((r) => r.data),
    onSuccess: () => {
      qc.invalidateQueries({ queryKey: ['dashboard-checks'] })
      qc.invalidateQueries({ queryKey: ['dashboard-home-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-summary'] })
      qc.invalidateQueries({ queryKey: ['dashboard-object-devices'] })
    },
  })
}