import { createLogger } from '@sim/logger'
import { type NextRequest, NextResponse } from 'next/server'
import {
  confluenceCreateSpaceContract,
  confluenceDeleteSpaceContract,
  confluenceGetSpaceContract,
  confluenceUpdateSpaceContract,
} from '@/lib/api/contracts/selectors/confluence'
import { parseRequest } from '@/lib/api/server'
import { checkSessionOrInternalAuth } from '@/lib/auth/hybrid'
import { validateAlphanumericId, validateJiraCloudId } from '@/lib/core/security/input-validation'
import { withRouteHandler } from '@/lib/core/utils/with-route-handler'
import { getConfluenceCloudId } from '@/tools/confluence/utils'
import { parseAtlassianErrorMessage } from '@/tools/jira/utils'

const logger = createLogger('ConfluenceSpaceAPI')

export const dynamic = 'force-dynamic'

// Get a specific space
export const GET = withRouteHandler(async (request: NextRequest) => {
  try {
    const auth = await checkSessionOrInternalAuth(request)
    if (!auth.success || !auth.userId) {
      return NextResponse.json({ error: auth.error || 'Unauthorized' }, { status: 401 })
    }

    const parsed = await parseRequest(confluenceGetSpaceContract, request, {})
    if (!parsed.success) return parsed.response

    const { domain, accessToken, spaceId, cloudId: providedCloudId } = parsed.data.query

    if (!domain) {
      return NextResponse.json({ error: 'Domain is required' }, { status: 400 })
    }

    if (!accessToken) {
      return NextResponse.json({ error: 'Access token is required' }, { status: 400 })
    }

    if (!spaceId) {
      return NextResponse.json({ error: 'Space ID is required' }, { status: 400 })
    }

    const spaceIdValidation = validateAlphanumericId(spaceId, 'spaceId', 255)
    if (!spaceIdValidation.isValid) {
      return NextResponse.json({ error: spaceIdValidation.error }, { status: 400 })
    }

    const cloudId = providedCloudId || (await getConfluenceCloudId(domain, accessToken))

    const cloudIdValidation = validateJiraCloudId(cloudId, 'cloudId')
    if (!cloudIdValidation.isValid) {
      return NextResponse.json({ error: cloudIdValidation.error }, { status: 400 })
    }

    const url = `https://api.atlassian.com/ex/confluence/${cloudId}/wiki/api/v2/spaces/${spaceId}`

    const response = await fetch(url, {
      method: 'GET',
      headers: {
        Accept: 'application/json',
        Authorization: `Bearer ${accessToken}`,
      },
    })

    if (!response.ok) {
      const errorText = await response.text()
      logger.error('Confluence API error response:', {
        status: response.status,
        statusText: response.statusText,
        error: errorText,
      })
      return NextResponse.json(
        { error: parseAtlassianErrorMessage(response.status, response.statusText, errorText) },
        { status: response.status }
      )
    }

    const data = await response.json()
    return NextResponse.json(data)
  } catch (error) {
    logger.error('Error getting Confluence space:', error)
    return NextResponse.json(
      { error: (error as Error).message || 'Internal server error' },
      { status: 500 }
    )
  }
})

/**
 * Create a new Confluence space.
 * Uses POST /wiki/api/v2/spaces
 */
export const POST = withRouteHandler(async (request: NextRequest) => {
  try {
    const auth = await checkSessionOrInternalAuth(request)
    if (!auth.success || !auth.userId) {
      return NextResponse.json({ error: auth.error || 'Unauthorized' }, { status: 401 })
    }

    const parsed = await parseRequest(confluenceCreateSpaceContract, request, {})
    if (!parsed.success) return parsed.response

    const {
      domain,
      accessToken,
      name,
      key,
      description,
      cloudId: providedCloudId,
    } = parsed.data.body

    if (!domain) {
      return NextResponse.json({ error: 'Domain is required' }, { status: 400 })
    }

    if (!accessToken) {
      return NextResponse.json({ error: 'Access token is required' }, { status: 400 })
    }

    if (!name) {
      return NextResponse.json({ error: 'Space name is required' }, { status: 400 })
    }

    if (!key) {
      return NextResponse.json({ error: 'Space key is required' }, { status: 400 })
    }

    const cloudId = providedCloudId || (await getConfluenceCloudId(domain, accessToken))

    const cloudIdValidation = validateJiraCloudId(cloudId, 'cloudId')
    if (!cloudIdValidation.isValid) {
      return NextResponse.json({ error: cloudIdValidation.error }, { status: 400 })
    }

    const url = `https://api.atlassian.com/ex/confluence/${cloudId}/wiki/api/v2/spaces`

    const createBody: Record<string, unknown> = { name, key }
    if (description) {
      createBody.description = { value: description, representation: 'plain' }
    }

    logger.info(`Creating space with key ${key}`)

    const response = await fetch(url, {
      method: 'POST',
      headers: {
        Accept: 'application/json',
        'Content-Type': 'application/json',
        Authorization: `Bearer ${accessToken}`,
      },
      body: JSON.stringify(createBody),
    })

    if (!response.ok) {
      const errorText = await response.text()
      logger.error('Confluence API error response:', {
        status: response.status,
        statusText: response.statusText,
        error: errorText,
      })
      return NextResponse.json(
        { error: parseAtlassianErrorMessage(response.status, response.statusText, errorText) },
        { status: response.status }
      )
    }

    const data = await response.json()
    return NextResponse.json(data)
  } catch (error) {
    logger.error('Error creating Confluence space:', error)
    return NextResponse.json(
      { error: (error as Error).message || 'Internal server error' },
      { status: 500 }
    )
  }
})

/**
 * Update a Confluence space.
 * Uses PUT /wiki/api/v2/spaces/{id}
 */
export const PUT = withRouteHandler(async (request: NextRequest) => {
  try {
    const auth = await checkSessionOrInternalAuth(request)
    if (!auth.success || !auth.userId) {
      return NextResponse.json({ error: auth.error || 'Unauthorized' }, { status: 401 })
    }

    const parsed = await parseRequest(confluenceUpdateSpaceContract, request, {})
    if (!parsed.success) return parsed.response

    const {
      domain,
      accessToken,
      spaceId,
      name,
      description,
      cloudId: providedCloudId,
    } = parsed.data.body

    if (!domain) {
      return NextResponse.json({ error: 'Domain is required' }, { status: 400 })
    }

    if (!accessToken) {
      return NextResponse.json({ error: 'Access token is required' }, { status: 400 })
    }

    if (!spaceId) {
      return NextResponse.json({ error: 'Space ID is required' }, { status: 400 })
    }

    const spaceIdValidation = validateAlphanumericId(spaceId, 'spaceId', 255)
    if (!spaceIdValidation.isValid) {
      return NextResponse.json({ error: spaceIdValidation.error }, { status: 400 })
    }

    const cloudId = providedCloudId || (await getConfluenceCloudId(domain, accessToken))

    const cloudIdValidation = validateJiraCloudId(cloudId, 'cloudId')
    if (!cloudIdValidation.isValid) {
      return NextResponse.json({ error: cloudIdValidation.error }, { status: 400 })
    }

    if (!name && description === undefined) {
      return NextResponse.json(
        { error: 'At least one of name or description is required for update' },
        { status: 400 }
      )
    }

    const lookupUrl = `https://api.atlassian.com/ex/confluence/${cloudId}/wiki/api/v2/spaces/${spaceId}`
    const lookupResponse = await fetch(lookupUrl, {
      headers: {
        Accept: 'application/json',
        Authorization: `Bearer ${accessToken}`,
      },
    })
    if (!lookupResponse.ok) {
      const errorText = await lookupResponse.text()
      return NextResponse.json(
        {
          error: parseAtlassianErrorMessage(
            lookupResponse.status,
            lookupResponse.statusText,
            errorText
          ),
        },
        { status: lookupResponse.status }
      )
    }
    const currentSpace = await lookupResponse.json()
    const spaceKey = currentSpace.key

    const updateBody: Record<string, unknown> = {
      name: name || currentSpace.name,
    }
    if (description !== undefined) {
      updateBody.description = { plain: { value: description, representation: 'plain' } }
    }

    const url = `https://api.atlassian.com/ex/confluence/${cloudId}/wiki/rest/api/space/${encodeURIComponent(spaceKey)}`
    logger.info(`Updating space ${spaceKey}`)

    const response = await fetch(url, {
      method: 'PUT',
      headers: {
        Accept: 'application/json',
        'Content-Type': 'application/json',
        Authorization: `Bearer ${accessToken}`,
      },
      body: JSON.stringify(updateBody),
    })

    if (!response.ok) {
      const errorText = await response.text()
      logger.error('Confluence API error response:', {
        status: response.status,
        statusText: response.statusText,
        error: errorText,
      })
      return NextResponse.json(
        { error: parseAtlassianErrorMessage(response.status, response.statusText, errorText) },
        { status: response.status }
      )
    }

    const data = await response.json()
    return NextResponse.json(data)
  } catch (error) {
    logger.error('Error updating Confluence space:', error)
    return NextResponse.json(
      { error: (error as Error).message || 'Internal server error' },
      { status: 500 }
    )
  }
})

/**
 * Delete a Confluence space.
 * Uses DELETE /wiki/api/v2/spaces/{id}
 */
export const DELETE = withRouteHandler(async (request: NextRequest) => {
  try {
    const auth = await checkSessionOrInternalAuth(request)
    if (!auth.success || !auth.userId) {
      return NextResponse.json({ error: auth.error || 'Unauthorized' }, { status: 401 })
    }

    const parsed = await parseRequest(confluenceDeleteSpaceContract, request, {})
    if (!parsed.success) return parsed.response

    const { domain, accessToken, spaceId, cloudId: providedCloudId } = parsed.data.body

    if (!domain) {
      return NextResponse.json({ error: 'Domain is required' }, { status: 400 })
    }

    if (!accessToken) {
      return NextResponse.json({ error: 'Access token is required' }, { status: 400 })
    }

    if (!spaceId) {
      return NextResponse.json({ error: 'Space ID is required' }, { status: 400 })
    }

    const spaceIdValidation = validateAlphanumericId(spaceId, 'spaceId', 255)
    if (!spaceIdValidation.isValid) {
      return NextResponse.json({ error: spaceIdValidation.error }, { status: 400 })
    }

    const cloudId = providedCloudId || (await getConfluenceCloudId(domain, accessToken))

    const cloudIdValidation = validateJiraCloudId(cloudId, 'cloudId')
    if (!cloudIdValidation.isValid) {
      return NextResponse.json({ error: cloudIdValidation.error }, { status: 400 })
    }

    const lookupUrl = `https://api.atlassian.com/ex/confluence/${cloudId}/wiki/api/v2/spaces/${spaceId}`
    const lookupResponse = await fetch(lookupUrl, {
      headers: {
        Accept: 'application/json',
        Authorization: `Bearer ${accessToken}`,
      },
    })
    if (!lookupResponse.ok) {
      const errorText = await lookupResponse.text()
      return NextResponse.json(
        {
          error: parseAtlassianErrorMessage(
            lookupResponse.status,
            lookupResponse.statusText,
            errorText
          ),
        },
        { status: lookupResponse.status }
      )
    }
    const currentSpace = await lookupResponse.json()
    const spaceKey = currentSpace.key

    const url = `https://api.atlassian.com/ex/confluence/${cloudId}/wiki/rest/api/space/${encodeURIComponent(spaceKey)}`

    logger.info(`Deleting space ${spaceKey}`)

    const response = await fetch(url, {
      method: 'DELETE',
      headers: {
        Accept: 'application/json',
        Authorization: `Bearer ${accessToken}`,
      },
    })

    if (!response.ok) {
      const errorText = await response.text()
      logger.error('Confluence API error response:', {
        status: response.status,
        statusText: response.statusText,
        error: errorText,
      })
      return NextResponse.json(
        { error: parseAtlassianErrorMessage(response.status, response.statusText, errorText) },
        { status: response.status }
      )
    }

    let longTask: { id?: string; statusLink?: string } = {}
    try {
      const text = await response.text()
      if (text) {
        const data = JSON.parse(text)
        longTask = {
          id: data?.id,
          statusLink: data?.links?.status,
        }
      }
    } catch {
      // 204 No Content or non-JSON body — ignore
    }

    return NextResponse.json({
      spaceId,
      deleted: true,
      longTaskId: longTask.id,
      longTaskStatusLink: longTask.statusLink,
    })
  } catch (error) {
    logger.error('Error deleting Confluence space:', error)
    return NextResponse.json(
      { error: (error as Error).message || 'Internal server error' },
      { status: 500 }
    )
  }
})