import FixePosition from '../../entities/FixePosition'
import ClimbSinkSegment from '../../entities/ClimbSinkSegment'
export default class ClimbSinkParser {

  public CLIMB_HEIGHT_THRESHOLD = 100 // 100 meters will be consider a climb to highlight on the map
  public CLIMB_TIME_THRESHOLD = 300000 // 5 minutes timeframe will be consider a climb to highlight on the map
  public SINK_HEIGHT_THRESHOLD = 100 // 100 meters will be consider a sink to highlight on the map
  public SINK_TIME_THRESHOLD = 120000 // 2 minutes timeframe will be consider a sink to highlight on the map
  public CLIMB_OR_SINK_STOP_THRESHOLD = 15000 // 10 seconds will be consider a climb or sink to highlight on the map

  public climbSinkFixesIndexesToAdd: Array<number> = []
  public climbSinkSegments: Array<ClimbSinkSegment> = []
  public isClimbOrSinkType: 'NONE' | 'CLIMB' | 'SINK' = 'NONE'
  public isClimbOrSinkAchieved: boolean = false
  public climbOrSinkStartedAt: number = 0
  public climbOrSinkEndedAt: number = 0
  public climbOrSinkHeightStart: number = 0
  public climbOrSinkHeightEnd: number = 0
  public climbOrSinkHeightTotal: number = 0
  public climbOrSinkStopedAt: number = 0

  constructor({ climbHeight = 100, sinkHeight = 100, sinkTime = 120000, climbTime = 300000, stopTime = 15000 } = {}) {
    this.CLIMB_HEIGHT_THRESHOLD = climbHeight
    this.SINK_HEIGHT_THRESHOLD = sinkHeight
    this.SINK_TIME_THRESHOLD = sinkTime
    this.CLIMB_TIME_THRESHOLD = climbTime
    this.CLIMB_OR_SINK_STOP_THRESHOLD = stopTime
  }

  private getIsClimbOrSink(fixePosition: FixePosition)  {
    if(fixePosition.climbSinkRate === 0) return 'NONE'
    if(fixePosition.climbSinkRate > 0) return 'CLIMB'
    return 'SINK'
  }

  public processClimbSinkSegment(fixePosition: FixePosition, index: number) {

    fixePosition.isClimbingOrSinkType = this.getIsClimbOrSink(fixePosition)

    if(fixePosition.climbSinkRate !== 0) {

      if(this.isClimbOrSinkType === 'NONE') {
        this.climbOrSinkStartedAt = fixePosition.timestamp
        this.climbOrSinkHeightStart = fixePosition.gpsAltitude
        this.climbOrSinkHeightTotal += fixePosition.altitudeDiff
        this.isClimbOrSinkType = fixePosition.climbSinkRate > 0 ? 'CLIMB' : 'SINK'
      } else {

        const addSink = Boolean(this.isClimbOrSinkType === 'SINK' && fixePosition.gpsAltitude < this.climbOrSinkHeightEnd)
        const addClimb = Boolean(this.isClimbOrSinkType === 'CLIMB' && fixePosition.gpsAltitude > this.climbOrSinkHeightEnd)

        this.climbSinkFixesIndexesToAdd.push(index)
        
        if(addSink || addClimb) {
          this.climbOrSinkEndedAt = fixePosition.timestamp
          this.climbOrSinkHeightEnd = fixePosition.gpsAltitude
          this.climbOrSinkHeightTotal = this.climbOrSinkHeightEnd - this.climbOrSinkHeightStart
        }

        const CLIMB_OR_SINK_TIME_THRESHOLD = this.isClimbOrSinkType === 'SINK' ? this.SINK_TIME_THRESHOLD : this.CLIMB_TIME_THRESHOLD
        const CLIMB_OR_SINK_HEIGHT_THRESHOLD = this.isClimbOrSinkType === 'SINK' ? this.SINK_HEIGHT_THRESHOLD : this.CLIMB_HEIGHT_THRESHOLD

        const climbOrSinkingDurationTs = this.climbOrSinkEndedAt - this.climbOrSinkStartedAt
        const timediffFromLastClimbOrSink = (fixePosition.timestamp - this.climbOrSinkEndedAt)
        this.isClimbOrSinkAchieved = Boolean(
          Math.abs(this.climbOrSinkHeightTotal) >= CLIMB_OR_SINK_HEIGHT_THRESHOLD &&
          climbOrSinkingDurationTs <= CLIMB_OR_SINK_TIME_THRESHOLD
        )

        if(!this.isClimbOrSinkAchieved && timediffFromLastClimbOrSink > this.CLIMB_OR_SINK_STOP_THRESHOLD) {
          this.isClimbOrSinkType = 'NONE'
          this.climbOrSinkHeightTotal = 0
          this.climbSinkFixesIndexesToAdd = []
          this.isClimbOrSinkAchieved = false
          return
        }

        if (this.isClimbOrSinkAchieved && timediffFromLastClimbOrSink > this.CLIMB_OR_SINK_STOP_THRESHOLD ) {

          this.climbSinkSegments.push({
            isClimbOrSinkType: this.isClimbOrSinkType,
            climbOrSinkHeightStart: this.climbOrSinkHeightStart,
            climbOrSinkHeightEnd: this.climbOrSinkHeightEnd,
            climbOrSinkStartedAt: this.climbOrSinkStartedAt,
            climbOrSinkEndedAt: this.climbOrSinkEndedAt,
            climbOrSinkHeightTotal: this.climbOrSinkHeightTotal,
            climbOrSinkingDurationTs,
            fixesIndexes: [ ...this.climbSinkFixesIndexesToAdd ]
          })

          this.isClimbOrSinkType = 'NONE'
          this.climbOrSinkHeightTotal = 0
          this.climbSinkFixesIndexesToAdd = []
          
        }
      
      }
      
    }
  }

}