import { Hover, HoverParams, MarkupContent, MarkupKind } from "vscode-languageserver"
import { SyntaxNode } from "web-tree-sitter"
import { nodeAtPoint, wordAtPoint } from "../analyze"
import { acctRecordFields } from "../documentation/accountRecordFields"
import { commentRecordFields } from "../documentation/commentRecordFields"
import { fmHistoryRecordFields } from "../documentation/fmHisnoryRecordFields"
import { powerOnFunctions } from "../documentation/functions"
import { householdRecordFields } from "../documentation/householdRecordFields"
import { lookupRecordFields } from "../documentation/lookupRecordFields"
import { nameRecordFields } from "../documentation/nameRecordFields"
import { preferenceAccessRecordFields } from "../documentation/preferenceAccessRecordFields"
import { preferenceRecordFields } from "../documentation/preferenceRecordFields"
import { trackingRecordFields } from "../documentation/trackingRecordFields"
import { noteRecordFields } from "../documentation/noteRecordFields"
import { Context } from "../interfaces"
import { shareRecordFields } from "../documentation/shareRecordFields"
import { holdRecordFields } from "../documentation/shareHoldRecordFields"
import { transferRecordFields } from "../documentation/transferRecordFields"
import { checkOrderRecordFields } from "../documentation/checkOrderRecordFields"
import { transactionRecordFields } from "../documentation/transactionRecordFields"
import { shareAnalysisGroupRecordFields } from "../documentation/shareAnalysisGroupRecordFields"
import { shareAnalysisFields } from "../documentation/shareAnalysisRecordFields"
import { shareAnalysisPlanRecordFields } from "../documentation/shareAnalysisPlanRecordFields"
import { irsRecordFields } from "../documentation/irsRecordFields"
import { irsDistributionRecordFields } from "../documentation/irsDistributionRecordFields"
import { loanRecordFields } from "../documentation/loanRecordFields"
import { pledgeRecordFields } from "../documentation/pledgeRecordFields"
import { escrowAnalysisRecordFields } from "../documentation/escrowAnalysisRecordFields"
import { escrowRecordFields } from "../documentation/escrowRecordFields"
import { scheduleRecordFields } from "../documentation/scheduleRecordFields"
import { segmentRecordFields } from "../documentation/segmentRecordFields"
import { rateChangeRecordFields } from "../documentation/rateChangeRecordFields"
import { loanBankruptcyRecordFields } from "../documentation/loanBankruptcyRecordFields"
import { loanBankruptcyPrepetitionBalanceRecordFields } from "../documentation/loanBankruptcyPrepetitionBalanceRecordFields"
import { eftRecordFields } from "../documentation/eftRecordFields"
import { eftAddendaInfoRecordFields } from "../documentation/eftAddendaInfoRecordFields"
import { externalLoanRecordFields } from "../documentation/externalLoanRecordFields"
import { cardRecordFields } from "../documentation/cardRecordFields"
import { loanAppRecordFields } from "../documentation/loanAppRecordFields"
import { loanAppPersonRecordFields } from "../documentation/loanAppPersonRecordFields"
import { loanAppFinanceRecordFields } from "../documentation/loanAppFinanceRecordFields"
import { cpWorkCardRecordFields } from "../documentation/cpWorkCardRecordFields"
import { creditReportRecordFields } from "../documentation/creditReportRecordFields"
import { creditReportItemRecordFields } from "../documentation/creditReportItemRecordFields"
import { portfolioRecordFields } from "../documentation/portfolioRecordFields"
import { siteRecordFields } from "../documentation/siteRecordFields"
import { cashOrderTypeRecordFields } from "../documentation/cashOrderTypeRecordFields"
import { externalAccountRecordFields } from "../documentation/externalAccountRecordFields"
import { batchACHOriginationRecordFields } from "../documentation/batchACHOriginationRecordFields"
import { recordTypes } from "../documentation/recordTypes"
import { CODEEND, CODESTART } from "../utils"

export function getHoverHandler(context: Context) {

 return function handleHover(params: HoverParams): Hover | null {
  const node = nodeAtPoint(params.position.line, params.position.character, params.textDocument.uri, context)
  if (!node) return null
  if (node.type.toString() === 'record_type') {
   const mdContent = recordTypes.get(node.text.trim().toLowerCase())

   if (!mdContent) return null
   const contents: MarkupContent = {
    kind: MarkupKind.Markdown,
    value: mdContent
   }

   return {
    contents,
    range: {
     start: {
      line: node.startPosition.row,
      character: node.startPosition.column
     },
     end: {
      line: node.endPosition.row,
      character: node.endPosition.column
     }
    }

   }
  } else if (node.type.toString() === 'poweron_function' || node.parent?.type.toString() === 'poweron_function') {
   let funcName = wordAtPoint(params.position.line, params.position.character, params.textDocument.uri, context)
   if (node && (node.type.toString() === 'fmperform' ||
    node.type.toString() === 'tranperform' ||
    node.type.toString() === 'insertqueue')) {
    funcName = node.type.toString()
   }

   if (!funcName) return null
   funcName = funcName.split('(')[0].toLowerCase()
   funcName = funcName.split('=')[0].toLowerCase()
   const contents = powerOnFunctions.get(funcName)
   if (contents) {
    return {
     contents,
     range: {
      start: {
       line: node.startPosition.row,
       character: node.startPosition.column
      },
      end: {
       line: node.endPosition.row,
       character: node.endPosition.column
      }
     }
    }
   }
  } else if (node.type.toString() === 'field_name' ||
   node.type.toString() === 'record_type') {
   let recordType = ''
   let fieldName = ''
   let targetNode = node
   if (node.type.toString() === 'record_type') {
    recordType = node.text
    if (node.nextSibling?.type.toString() === 'field_name') {
     fieldName = node.nextSibling.text
     targetNode = node.nextSibling
    }
   } else if (node.type.toString() === 'field_name') {
    fieldName = node.text
    if (node.previousSibling?.type.toString() === 'record_type') {
     recordType = node.previousSibling.text
    } else if (node.parent?.previousSibling?.type.toString() == 'record_type') {
     recordType = node.parent.previousSibling.text
    }
   }

   if (!fieldName && !recordType) return null

   return getHoverInfo(fieldName.toLowerCase(), recordType.toLowerCase(), targetNode)
  } else if (node.type === 'identifier') {

   const tree = context.trees[params.textDocument.uri]
   const poweron = tree.getLanguage()
   let queryString = '(variable_declaration (identifier) @var)'
   const query = poweron.query(queryString)
   let hover: Hover | null = null

   query.captures(tree.rootNode).forEach(cap => {
    if (cap.node.text.toLowerCase() === node.text.toLowerCase() && cap.node.parent) {
     hover = {
      contents: cap.node.parent.text,
      range: {
       start: {
        line: node.startPosition.row,
        character: node.startPosition.column
       },
       end: {
        line: node.endPosition.row,
        character: node.endPosition.column
       }
      }
     }
    }
   })
   return hover
  }

  return null
 }
}

function getHoverInfo(fieldName: string, recordType: string, node: SyntaxNode): Hover | null {
 let mdContent: string | undefined = ''
 switch (recordType) {
  case 'account':
   mdContent = acctRecordFields.get(fieldName)
   break
  case 'fmhistory':
   mdContent = fmHistoryRecordFields.get(fieldName)
   break
  case 'name':
  case 'share name':
  case 'irs name':
  case 'loan name':
  case 'loan pledge name':
  case 'eft name':
  case 'card name':
  case 'externalloan name':
   mdContent = nameRecordFields.get(fieldName)
   break
  case 'lookup':
   mdContent = lookupRecordFields.get(fieldName)
   break
  case 'comment':
   mdContent = commentRecordFields.get(fieldName)
   break
  case 'household':
   mdContent = householdRecordFields.get(fieldName)
   break
  case 'preference':
   mdContent = preferenceRecordFields.get(fieldName)
   break
  case 'card access':
  case 'preference access':
   mdContent = preferenceAccessRecordFields.get(fieldName)
   break
  case 'tracking':
  case 'externalloan tracking':
  case 'share tracking':
  case 'loan tracking':
  case 'loanapp tracking':
  case 'cpworkcard tracking':
   mdContent = trackingRecordFields.get(fieldName)
   break
  case 'note':
  case 'card note':
  case 'cpworkcard note':
  case 'loan note':
  case 'loanapp note':
  case 'portfolio note':
  case 'share note':
  case 'externalloan note':
  case 'invoice note':
  case 'ctr note':
  case 'dealer note':
  case 'participant note':
  case 'participation note':
  case 'participationloan note':
  case 'agreement note':
   mdContent = noteRecordFields.get(fieldName)
   break
  case 'share':
   mdContent = shareRecordFields.get(fieldName)
   break
  case 'share hold':
  case 'loan hold':
  case 'portfolio hold':
   mdContent = holdRecordFields.get(fieldName)
   break
  case 'share transfer':
  case 'eft transfer':
  case 'loan transfer':
  case 'externalloan transfer':
   mdContent = transferRecordFields.get(fieldName)
   break
  case 'loan checkorder':
  case 'share checkorder':
   mdContent = checkOrderRecordFields.get(fieldName)
   break
  case 'loan transaction':
  case 'share transaction':
   mdContent = transactionRecordFields.get(fieldName)
   break
  case 'share analysisgroup':
   mdContent = shareAnalysisGroupRecordFields.get(fieldName)
   break
  case 'share analysisplan':
   mdContent = shareAnalysisPlanRecordFields.get(fieldName)
   break
  case 'share analysis':
   mdContent = shareAnalysisFields.get(fieldName)
   break
  case 'irs':
  case 'ira':
   mdContent = irsRecordFields.get(fieldName)
   break
  case 'irs distribution':
   mdContent = irsDistributionRecordFields.get(fieldName)
   break
  case 'loan':
   mdContent = loanRecordFields.get(fieldName)
   break
  case 'pledge':
  case 'loan pledge':
  case 'loanapp pledge':
   mdContent = pledgeRecordFields.get(fieldName)
   break
  case 'loan escrowanalysis':
  case 'loanapp escrowanalysis':
   mdContent = escrowAnalysisRecordFields.get(fieldName)
   break
  case 'loan escrow':
  case 'loanapp escrow':
   mdContent = escrowRecordFields.get(fieldName)
   break
  case 'loan schedule':
  case 'loanapp schedule':
   mdContent = scheduleRecordFields.get(fieldName)
   break
  case 'loan lnsegment':
  case 'loanapp lnsegment':
   mdContent = segmentRecordFields.get(fieldName)
   break
  case 'loan ratechange':
   mdContent = rateChangeRecordFields.get(fieldName)
   break
  case 'loan bankruptcy':
   mdContent = loanBankruptcyRecordFields.get(fieldName)
   break
  case 'loan bankruptcy prepetitionbal':
   mdContent = loanBankruptcyPrepetitionBalanceRecordFields.get(fieldName)
   break
  case 'eft':
  case 'bill':
  case 'payroll':
   mdContent = eftRecordFields.get(fieldName)
   break
  case 'eft addendainfo':
   mdContent = eftAddendaInfoRecordFields.get(fieldName)
   break
  case 'externalloan':
   mdContent = externalLoanRecordFields.get(fieldName)
   break
  case 'card':
   mdContent = cardRecordFields.get(fieldName)
   break
  case 'loanapp':
   mdContent = loanAppRecordFields.get(fieldName)
   break
  case 'loanapp person':
   mdContent = loanAppPersonRecordFields.get(fieldName)
   break
  case 'loanapp finance':
   mdContent = loanAppFinanceRecordFields.get(fieldName)
   break
  case 'cpworkcard':
   mdContent = cpWorkCardRecordFields.get(fieldName)
   break
  case 'credrep':
   mdContent = creditReportRecordFields.get(fieldName)
   break
  case 'credrep item':
   mdContent = creditReportItemRecordFields.get(fieldName)
   break
  case 'portfolio':
   mdContent = portfolioRecordFields.get(fieldName)
   break
  case 'site':
   mdContent = siteRecordFields.get(fieldName)
   break
  case 'site cashordertype':
   mdContent = cashOrderTypeRecordFields.get(fieldName)
   break
  case 'externalaccount':
   mdContent = externalAccountRecordFields.get(fieldName)
   break
  case 'batchachorig':
   mdContent = batchACHOriginationRecordFields.get(fieldName)
   break
  default:
   return null
 }

 if (!mdContent) return null
 const contents: MarkupContent = {
  kind: MarkupKind.Markdown,
  value: mdContent
 }

 return {
  contents,
  range: {
   start: {
    line: node.startPosition.row,
    character: node.startPosition.column
   },
   end: {
    line: node.endPosition.row,
    character: node.endPosition.column
   }
  }

 }
}