import { PermissionAction } from '@supabase/shared-types/out/constants'
import { useQueryClient } from '@tanstack/react-query'
import clsx from 'clsx'
import Link from 'next/link'
import { useRouter } from 'next/router'
import { useEffect, useState } from 'react'

import { useParams } from 'common'
import { useTheme } from 'next-themes'
import { useProjectContext } from 'components/layouts/ProjectLayout/ProjectContext'
import { setProjectStatus } from 'data/projects/projects-query'
import { useProjectAddonRemoveMutation } from 'data/subscriptions/project-addon-remove-mutation'
import { useProjectAddonUpdateMutation } from 'data/subscriptions/project-addon-update-mutation'
import { useProjectAddonsQuery } from 'data/subscriptions/project-addons-query'
import { useCheckPermissions, useSelectedOrganization, useStore } from 'hooks'
import { getCloudProviderArchitecture } from 'lib/cloudprovider-utils'
import { BASE_PATH, PROJECT_STATUS } from 'lib/constants'
import Telemetry from 'lib/telemetry'
import { useSubscriptionPageStateSnapshot } from 'state/subscription-page'
import {
  Alert,
  AlertDescription_Shadcn_,
  Alert_Shadcn_,
  Button,
  IconAlertTriangle,
  IconExternalLink,
  IconInfo,
  Modal,
  Radio,
  SidePanel,
} from 'ui'

import * as Tooltip from '@radix-ui/react-tooltip'
import { useOrgSubscriptionQuery } from 'data/subscriptions/org-subscription-query'

const COMPUTE_CATEGORY_OPTIONS: {
  id: 'micro' | 'optimized'
  name: string
  imageUrl: string
  imageUrlLight: string
}[] = [
  {
    id: 'micro',
    name: 'Micro Compute',
    imageUrl: `${BASE_PATH}/img/optimized-compute-off.png`,
    imageUrlLight: `${BASE_PATH}/img/optimized-compute-off--light.png`,
  },
  {
    id: 'optimized',
    name: 'Optimized Compute',
    imageUrl: `${BASE_PATH}/img/optimized-compute-on.png`,
    imageUrlLight: `${BASE_PATH}/img/optimized-compute-on--light.png`,
  },
]

const ComputeInstanceSidePanel = () => {
  const queryClient = useQueryClient()
  const { ui } = useStore()
  const router = useRouter()
  const { ref: projectRef } = useParams()
  const { resolvedTheme } = useTheme()
  const { project: selectedProject } = useProjectContext()
  const organization = useSelectedOrganization()

  const [showConfirmationModal, setShowConfirmationModal] = useState(false)
  const [selectedCategory, setSelectedCategory] = useState<'micro' | 'optimized'>('micro')
  const [selectedOption, setSelectedOption] = useState<string>('ci_micro')

  const canUpdateCompute = useCheckPermissions(
    PermissionAction.BILLING_WRITE,
    'stripe.subscriptions'
  )

  const snap = useSubscriptionPageStateSnapshot()
  const visible = snap.panelKey === 'computeInstance'
  const onClose = () => snap.setPanelKey(undefined)

  const { data: addons, isLoading } = useProjectAddonsQuery({ projectRef })
  const { data: subscription } = useOrgSubscriptionQuery({ orgSlug: organization?.slug })
  const { mutate: updateAddon, isLoading: isUpdating } = useProjectAddonUpdateMutation({
    onSuccess: () => {
      ui.setNotification({
        duration: 8000,
        category: 'success',
        message: `Successfully updated compute instance to ${selectedCompute?.name}. Your project is currently being restarted to update its instance`,
      })
      setProjectStatus(queryClient, projectRef!, PROJECT_STATUS.RESTORING)
      onClose()
      router.push(`/project/${projectRef}`)
    },
    onError: (error) => {
      ui.setNotification({
        error,
        category: 'error',
        message: `Unable to update compute instance: ${error.message}`,
      })
    },
  })
  const { mutate: removeAddon, isLoading: isRemoving } = useProjectAddonRemoveMutation({
    onSuccess: () => {
      ui.setNotification({
        duration: 8000,
        category: 'success',
        message: `Successfully updated compute instance to Micro. Your project is currently being restarted to update its instance`,
      })
      setProjectStatus(queryClient, projectRef!, PROJECT_STATUS.RESTORING)
      onClose()
      router.push(`/project/${projectRef}`)
    },
    onError: (error) => {
      ui.setNotification({
        error,
        category: 'error',
        message: `Unable to update compute instance: ${error.message}`,
      })
    },
  })
  const isSubmitting = isUpdating || isRemoving

  const projectId = selectedProject?.id
  const cpuArchitecture = getCloudProviderArchitecture(selectedProject?.cloud_provider)
  const selectedAddons = addons?.selected_addons ?? []
  const availableAddons = addons?.available_addons ?? []

  const isFreePlan = subscription?.plan?.id === 'free'
  const subscriptionCompute = selectedAddons.find((addon) => addon.type === 'compute_instance')
  const pitrAddon = selectedAddons.find((addon) => addon.type === 'pitr')
  const availableOptions =
    availableAddons.find((addon) => addon.type === 'compute_instance')?.variants ?? []
  const selectedCompute = availableOptions.find((option) => option.identifier === selectedOption)
  const hasChanges = selectedOption !== (subscriptionCompute?.variant.identifier ?? 'ci_micro')

  const blockMicroDowngradeDueToPitr =
    pitrAddon !== undefined && selectedOption === 'ci_micro' && hasChanges

  useEffect(() => {
    if (visible) {
      if (subscriptionCompute !== undefined) {
        setSelectedCategory('optimized')
        setSelectedOption(subscriptionCompute.variant.identifier)
      } else {
        setSelectedCategory('micro')
        setSelectedOption('ci_micro')
      }
      Telemetry.sendActivity(
        {
          activity: 'Side Panel Viewed',
          source: 'Dashboard',
          data: {
            title: 'Change project compute size',
            section: 'Add ons',
          },
          projectRef,
        },
        router
      )
    }
  }, [visible, isLoading])

  const onConfirmUpdateComputeInstance = async () => {
    if (!projectRef) return console.error('Project ref is required')
    if (!projectId) return console.error('Project ID is required')

    if (selectedOption === 'ci_micro' && subscriptionCompute !== undefined) {
      removeAddon({ projectRef, variant: subscriptionCompute.variant.identifier })
    } else {
      updateAddon({ projectRef, type: 'compute_instance', variant: selectedOption })
    }
  }

  return (
    <>
      <SidePanel
        size="xxlarge"
        visible={visible}
        onCancel={onClose}
        onConfirm={() => setShowConfirmationModal(true)}
        loading={isLoading}
        disabled={
          isFreePlan ||
          isLoading ||
          !hasChanges ||
          blockMicroDowngradeDueToPitr ||
          !canUpdateCompute
        }
        tooltip={
          isFreePlan
            ? 'Unable to update compute instance on a free plan'
            : !canUpdateCompute
            ? 'You do not have permission to update compute instance'
            : undefined
        }
        header={
          <div className="flex items-center justify-between">
            <h4>Change project compute size</h4>
            <Button asChild type="default" icon={<IconExternalLink strokeWidth={1.5} />}>
              <Link
                href="https://supabase.com/docs/guides/platform/compute-add-ons"
                target="_blank"
                rel="noreferrer"
              >
                About compute sizes
              </Link>
            </Button>
          </div>
        }
      >
        <SidePanel.Content>
          <div className="py-6 space-y-4">
            <p className="text-sm">
              For the database, compute size refers to the amount of CPU and memory allocated to the
              database instance.
            </p>

            <div className="!mt-8 pb-4">
              <div className="flex gap-3">
                {COMPUTE_CATEGORY_OPTIONS.map((option) => {
                  const isSelected = selectedCategory === option.id
                  return (
                    <div
                      key={option.id}
                      className={clsx('col-span-3 group space-y-1', isFreePlan && 'opacity-75')}
                      onClick={() => {
                        setSelectedCategory(option.id)
                        if (option.id === 'micro') setSelectedOption('ci_micro')
                        Telemetry.sendActivity(
                          {
                            activity: 'Option Selected',
                            source: 'Dashboard',
                            data: {
                              title: 'Change project compute size',
                              section: 'Add ons',
                              option: option.name,
                            },
                            projectRef,
                          },
                          router
                        )
                      }}
                    >
                      <img
                        alt="Compute Instance"
                        className={clsx(
                          'relative rounded-xl transition border bg-no-repeat bg-center bg-cover cursor-pointer w-[160px] h-[96px]',
                          isSelected
                            ? 'border-scale-1200'
                            : 'border-scale-900 opacity-50 group-hover:border-scale-1000 group-hover:opacity-100'
                        )}
                        width={160}
                        height={96}
                        src={resolvedTheme === 'dark' ? option.imageUrl : option.imageUrlLight}
                      />

                      <p
                        className={clsx(
                          'text-sm transition',
                          isSelected ? 'text-foreground' : 'text-foreground-light'
                        )}
                      >
                        {option.name}
                      </p>
                    </div>
                  )
                })}
              </div>
            </div>

            {selectedCategory === 'optimized' && (
              <div className="pb-4">
                {isFreePlan && (
                  <Alert
                    withIcon
                    className="mb-4"
                    variant="info"
                    title="Changing your compute size is only available on the Pro plan"
                    actions={
                      <Button asChild type="default">
                        <Link href={`/org/${organization?.slug}/billing?panel=subscriptionPlan`}>
                          View available plans
                        </Link>
                      </Button>
                    }
                  >
                    Upgrade your plan to change the compute size of your project
                  </Alert>
                )}
                <Radio.Group
                  type="large-cards"
                  size="tiny"
                  id="compute-instance"
                  label={<p className="text-sm">Choose the compute size you want to use</p>}
                  onChange={(event: any) => setSelectedOption(event.target.value)}
                >
                  {availableOptions.map((option) => (
                    <Radio
                      className="col-span-3 !p-0"
                      disabled={isFreePlan}
                      name="compute-instance"
                      key={option.identifier}
                      checked={selectedOption === option.identifier}
                      label={option.name}
                      value={option.identifier}
                    >
                      <div className="w-full group">
                        <div className="border-b border-scale-500 px-4 py-2">
                          <p className="text-sm">{option.name}</p>
                        </div>
                        <div className="px-4 py-2">
                          <p className="text-foreground-light">
                            {option.meta?.memory_gb ?? 0} GB memory
                          </p>
                          <p className="text-foreground-light">
                            {option.meta?.cpu_cores ?? 0}-core {cpuArchitecture} CPU (
                            {option.meta?.cpu_dedicated ? 'Dedicated' : 'Shared'})
                          </p>
                          <div className="flex justify-between items-center mt-2">
                            <div className="flex items-center space-x-1">
                              <span className="text-foreground text-sm">
                                ${option.price.toLocaleString()}
                              </span>
                              <span className="text-foreground-light translate-y-[1px]">
                                {' '}
                                / {option.price_interval === 'monthly' ? 'month' : 'hour'}
                              </span>
                            </div>
                            {option.price_interval === 'hourly' && (
                              <Tooltip.Root delayDuration={0}>
                                <Tooltip.Trigger>
                                  <div className="flex items-center">
                                    <IconInfo
                                      size={14}
                                      strokeWidth={2}
                                      className="hover:text-foreground-light"
                                    />
                                  </div>
                                </Tooltip.Trigger>
                                <Tooltip.Portal>
                                  <Tooltip.Content side="bottom">
                                    <Tooltip.Arrow className="radix-tooltip-arrow" />
                                    <div
                                      className={[
                                        'rounded bg-scale-100 py-1 px-2 leading-none shadow',
                                        'border border-scale-200',
                                      ].join(' ')}
                                    >
                                      <div className="flex items-center space-x-1">
                                        <p className="text-foreground text-sm">
                                          ${Number(option.price * 672).toFixed(0)} - $
                                          {Number(option.price * 744).toFixed(0)} per month
                                        </p>
                                      </div>
                                    </div>
                                  </Tooltip.Content>
                                </Tooltip.Portal>
                              </Tooltip.Root>
                            )}
                          </div>
                        </div>
                      </div>
                    </Radio>
                  ))}
                </Radio.Group>
              </div>
            )}

            {selectedCategory === 'micro' && (
              <p className="text-sm text-foreground-light">
                Your database will use the standard Micro size instance of 2-core {cpuArchitecture}{' '}
                CPU (Shared) with 1GB of memory.
              </p>
            )}

            {hasChanges &&
              (selectedCategory !== 'micro' && selectedCompute?.price_interval === 'monthly' ? (
                // Monthly payment with project-level subscription
                <p className="text-sm text-foreground-light">
                  Upon clicking confirm, the amount of{' '}
                  <span className="text-foreground">
                    ${selectedCompute?.price.toLocaleString()}
                  </span>{' '}
                  will be added to your monthly invoice. Any previous compute addon is prorated and
                  you're immediately charged for the remaining days of your billing cycle. The addon
                  is prepaid per month and in case of a downgrade, you get credits for the remaining
                  time.
                </p>
              ) : selectedCategory !== 'micro' ? (
                // Hourly usage-billing with org-based subscription
                <p className="text-sm text-foreground-light">
                  There are no immediate charges when changing compute. Compute Hours are a
                  usage-based item and you're billed at the end of your billing cycle based on your
                  compute usage. Read more about{' '}
                  <Link
                    href="https://supabase.com/docs/guides/platform/org-based-billing#usage-based-billing-for-compute"
                    target="_blank"
                    rel="noreferrer"
                    className="underline"
                  >
                    Compute Billing
                  </Link>
                  .
                </p>
              ) : (
                <></>
              ))}

            {hasChanges && !blockMicroDowngradeDueToPitr && (
              <Alert
                withIcon
                variant="info"
                title="Your project will need to be restarted when changing it's compute size"
              >
                It will take up to 2 minutes for changes to take place, in which your project will
                be unavailable during that time.
              </Alert>
            )}

            {blockMicroDowngradeDueToPitr && (
              <Alert
                withIcon
                variant="info"
                className="mb-4"
                title="Disable PITR before downgrading to Micro Compute"
                actions={
                  <Button type="default" onClick={() => snap.setPanelKey('pitr')}>
                    Change PITR
                  </Button>
                }
              >
                <p>
                  You currently have PITR enabled. The minimum compute instance size for using PITR
                  is the Small Compute.
                </p>
                <p>You need to disable PITR before downgrading to Micro Compute.</p>
              </Alert>
            )}

            {hasChanges &&
              subscription?.billing_via_partner &&
              subscription.scheduled_plan_change?.target_plan !== undefined && (
                <Alert_Shadcn_ variant={'warning'} className="mb-2">
                  <IconAlertTriangle className="h-4 w-4" />
                  <AlertDescription_Shadcn_>
                    You have a scheduled subscription change that will be canceled if you change
                    your PITR add on.
                  </AlertDescription_Shadcn_>
                </Alert_Shadcn_>
              )}
          </div>
        </SidePanel.Content>
      </SidePanel>

      <Modal
        size="medium"
        alignFooter="right"
        visible={showConfirmationModal}
        loading={isSubmitting}
        onCancel={() => setShowConfirmationModal(false)}
        onConfirm={() => onConfirmUpdateComputeInstance()}
        header="Confirm to upgrade compute instance now"
      >
        <Modal.Content>
          <div className="py-6">
            <Alert
              withIcon
              variant="warning"
              title="Your project will need to be restarted when changing it's compute size"
            >
              It will take up to 2 minutes for changes to take place, in which your project will be
              unavailable during that time.
            </Alert>
          </div>
        </Modal.Content>
      </Modal>
    </>
  )
}

export default ComputeInstanceSidePanel