'use client'

import type { DeployRequest } from '@dify/contracts/enterprise/types.gen'
import { atom } from 'jotai'
import { atomWithMutation } from 'jotai-tanstack-query'
import { selectedDeploymentRuntimeCredentials } from '@/features/deployments/shared/components/runtime-credential-bindings-utils'
import { encodeDslContent, isWorkflowDsl } from '@/features/deployments/shared/domain/dsl'
import { unsupportedDslNodeError } from '@/features/deployments/shared/domain/error'
import { createDeploymentIdempotencyKey } from '@/features/deployments/shared/domain/idempotency'
import { consoleQuery } from '@/service/client'
import { environmentMatchesIdentifier } from './environment'
import {
  effectiveMethodAtom,
  envVarValuesAtom,
  instanceDescriptionAtom,
  instanceNameAtom,
  isCreatingDeploymentAtom,
  isCreatingReleaseOnlyAtom,
  isSubmittingDeploymentGuideAtom,
  releaseDescriptionAtom,
  releaseNameAtom,
  selectedEnvironmentIdAtom,
  submissionUnsupportedDslNodesAtom,
} from './primitives'
import { deployableEnvironmentsQueryAtom, deploymentOptionsDataAtom } from './queries'
import { submittedReleaseReadyAtom } from './release'
import { dslContentAtom, effectiveSelectedAppAtom } from './source'
import {
  canDeployAtom,
  canSkipDeploymentAtom,
  deployableEnvironmentsAtom,
  deploymentTargetBindingSelectionsAtom,
  deploymentTargetBindingSlotsAtom,
  deploymentTargetEnvVarSlotsAtom,
  requiredBindingsReadyAtom,
  requiredEnvVarsReadyAtom,
} from './target'
import { envVarInput } from './utils'

const createAppInstanceMutationAtom = atomWithMutation(() =>
  consoleQuery.enterprise.appInstanceService.createAppInstance.mutationOptions(),
)

const createReleaseMutationAtom = atomWithMutation(() =>
  consoleQuery.enterprise.releaseService.createRelease.mutationOptions(),
)

const createInitialDeploymentMutationAtom = atomWithMutation(() =>
  consoleQuery.enterprise.deploymentService.deploy.mutationOptions(),
)

export class CreateDeploymentGuideSubmissionBlockedError extends Error {
  reason: 'unsupportedDslMode' | 'deployFailed'

  constructor(reason: 'unsupportedDslMode' | 'deployFailed') {
    super(reason)
    this.reason = reason
    this.name = 'CreateDeploymentGuideSubmissionBlockedError'
  }
}

export const createDeploymentGuideSubmissionAtom = atom(
  null,
  async (
    get,
    set,
    {
      deployToEnvironment,
    }: {
      deployToEnvironment: boolean
    },
  ) => {
    const method = get(effectiveMethodAtom)
    const dslContent = get(dslContentAtom)
    const submittedInstanceName = get(instanceNameAtom).trim()
    const submittedReleaseName = get(releaseNameAtom).trim()
    const submittedReleaseDescription = get(releaseDescriptionAtom).trim()

    if (get(isSubmittingDeploymentGuideAtom) || !get(submittedReleaseReadyAtom)) return undefined

    const effectiveSelectedApp = get(effectiveSelectedAppAtom)
    const deployableEnvironmentsQuery = get(deployableEnvironmentsQueryAtom)
    const deploymentOptions = get(deploymentOptionsDataAtom)?.options
    const envVarSlots = get(deploymentTargetEnvVarSlotsAtom)
    const envVarValues = get(envVarValuesAtom)
    const bindingSlots = get(deploymentTargetBindingSlotsAtom)
    const bindingSelections = get(deploymentTargetBindingSelectionsAtom)
    const selectedEnvironmentId = get(selectedEnvironmentIdAtom)
    const effectiveSelectedEnvironmentId =
      selectedEnvironmentId || get(deployableEnvironmentsAtom)[0]?.id
    const selectedEnvironment = effectiveSelectedEnvironmentId
      ? get(deployableEnvironmentsAtom).find((env) =>
          environmentMatchesIdentifier(env, effectiveSelectedEnvironmentId),
        )
      : undefined

    if (deployToEnvironment && !selectedEnvironment && !selectedEnvironmentId.trim())
      return undefined
    if (method === 'bindApp' && !effectiveSelectedApp?.id) return undefined
    if (method === 'importDsl' && !dslContent.trim()) return undefined
    if (method === 'importDsl' && !isWorkflowDsl(dslContent))
      throw new CreateDeploymentGuideSubmissionBlockedError('unsupportedDslMode')

    set(submissionUnsupportedDslNodesAtom, [])

    try {
      if (!deployToEnvironment) {
        if (!get(canSkipDeploymentAtom)) return undefined

        set(isCreatingReleaseOnlyAtom, true)

        try {
          const createdAppInstance = await get(createAppInstanceMutationAtom).mutateAsync({
            body: {
              displayName: submittedInstanceName,
              description: get(instanceDescriptionAtom).trim() || undefined,
            },
          })
          const appInstanceId = createdAppInstance.appInstance.id

          if (method === 'importDsl') {
            await get(createReleaseMutationAtom).mutateAsync({
              body: {
                appInstanceId,
                dsl: encodeDslContent(dslContent),
                displayName: submittedReleaseName,
                description: submittedReleaseDescription || undefined,
                createAppInstance: false,
              },
            })

            return appInstanceId
          }

          if (!effectiveSelectedApp?.id) return undefined

          await get(createReleaseMutationAtom).mutateAsync({
            body: {
              appInstanceId,
              sourceAppId: effectiveSelectedApp.id,
              displayName: submittedReleaseName,
              description: submittedReleaseDescription || undefined,
              createAppInstance: false,
            },
          })

          return appInstanceId
        } finally {
          set(isCreatingReleaseOnlyAtom, false)
        }
      }

      if (!get(canDeployAtom)) return undefined

      set(isCreatingDeploymentAtom, true)

      try {
        const selectedEnvironmentIdentifier = selectedEnvironmentId.trim()
        const freshSelectedEnvironment =
          selectedEnvironment ||
          (selectedEnvironmentIdentifier
            ? (await deployableEnvironmentsQuery.refetch()).data?.environments.find((environment) =>
                environmentMatchesIdentifier(environment, selectedEnvironmentIdentifier),
              )
            : undefined)
        const targetEnvironmentId = freshSelectedEnvironment?.id
        if (!targetEnvironmentId)
          throw new CreateDeploymentGuideSubmissionBlockedError('deployFailed')

        if (!get(requiredBindingsReadyAtom)) throw new Error('Missing required deployment binding.')
        if (!get(requiredEnvVarsReadyAtom))
          throw new Error('Missing required deployment environment variable.')

        const envVars = envVarSlots.flatMap((slot) => envVarInput(slot, envVarValues[slot.key]))
        const commonDeploymentRequest = {
          newAppInstance: {
            displayName: submittedInstanceName,
            description: get(instanceDescriptionAtom).trim() || undefined,
          },
          environmentId: targetEnvironmentId,
          releaseName: submittedReleaseName,
          releaseDescription: submittedReleaseDescription || undefined,
          credentials: selectedDeploymentRuntimeCredentials(bindingSlots, bindingSelections),
          envVars,
          idempotencyKey: createDeploymentIdempotencyKey(),
          expectedDslDigest: deploymentOptions?.dslDigest,
        } satisfies Omit<DeployRequest, 'dsl' | 'sourceAppId'>
        const deploymentRequest =
          method === 'importDsl'
            ? {
                ...commonDeploymentRequest,
                dsl: encodeDslContent(dslContent),
              }
            : effectiveSelectedApp?.id
              ? {
                  ...commonDeploymentRequest,
                  sourceAppId: effectiveSelectedApp.id,
                }
              : undefined
        if (!deploymentRequest) return undefined

        const response = await get(createInitialDeploymentMutationAtom).mutateAsync({
          body: deploymentRequest,
        })

        return response.appInstance.id
      } finally {
        set(isCreatingDeploymentAtom, false)
      }
    } catch (error) {
      const unsupportedError = await unsupportedDslNodeError(error)
      if (unsupportedError?.nodes.length) {
        set(submissionUnsupportedDslNodesAtom, unsupportedError.nodes)

        return undefined
      }

      throw error
    }
  },
)