namespace modules {
    /**
     * A weight measuring sensor.
     **/
    //% fixedInstances blockGap=8
    export class WeightScaleClient extends jacdac.SimpleSensorClient {
        private readonly _weightError: jacdac.RegisterClient<[number]>
        private readonly _zeroOffset: jacdac.RegisterClient<[number]>
        private readonly _gain: jacdac.RegisterClient<[number]>
        private readonly _maxWeight: jacdac.RegisterClient<[number]>
        private readonly _minWeight: jacdac.RegisterClient<[number]>
        private readonly _weightResolution: jacdac.RegisterClient<[number]>
        private readonly _variant: jacdac.RegisterClient<
            [jacdac.WeightScaleVariant]
        >

        constructor(role: string) {
            super(
                jacdac.SRV_WEIGHT_SCALE,
                role,
                jacdac.WeightScaleRegPack.Weight
            )

            this._weightError = this.addRegister<[number]>(
                jacdac.WeightScaleReg.WeightError,
                jacdac.WeightScaleRegPack.WeightError,
                jacdac.RegisterClientFlags.Optional
            )
            this._zeroOffset = this.addRegister<[number]>(
                jacdac.WeightScaleReg.ZeroOffset,
                jacdac.WeightScaleRegPack.ZeroOffset,
                jacdac.RegisterClientFlags.Optional
            )
            this._gain = this.addRegister<[number]>(
                jacdac.WeightScaleReg.Gain,
                jacdac.WeightScaleRegPack.Gain,
                jacdac.RegisterClientFlags.Optional
            )
            this._maxWeight = this.addRegister<[number]>(
                jacdac.WeightScaleReg.MaxWeight,
                jacdac.WeightScaleRegPack.MaxWeight,
                jacdac.RegisterClientFlags.Optional |
                    jacdac.RegisterClientFlags.Const
            )
            this._minWeight = this.addRegister<[number]>(
                jacdac.WeightScaleReg.MinWeight,
                jacdac.WeightScaleRegPack.MinWeight,
                jacdac.RegisterClientFlags.Optional |
                    jacdac.RegisterClientFlags.Const
            )
            this._weightResolution = this.addRegister<[number]>(
                jacdac.WeightScaleReg.WeightResolution,
                jacdac.WeightScaleRegPack.WeightResolution,
                jacdac.RegisterClientFlags.Optional |
                    jacdac.RegisterClientFlags.Const
            )
            this._variant = this.addRegister<[jacdac.WeightScaleVariant]>(
                jacdac.WeightScaleReg.Variant,
                jacdac.WeightScaleRegPack.Variant,
                jacdac.RegisterClientFlags.Optional |
                    jacdac.RegisterClientFlags.Const
            )
        }

        /**
         * The reported weight.
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% block="%weightscale weight (kg)"
        //% blockId=jacdac_weightscale_weight___get
        //% weight=100
        weight(): number {
            return this.reading()
        }

        /**
         * The estimate error on the reported reading.
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% weight=99
        weightError(): number {
            this.start()
            const values = this._weightError.pauseUntilValues() as any[]
            return values[0]
        }

        /**
         * Calibrated zero offset error on the scale, i.e. the measured weight when nothing is on the scale.
         * You do not need to subtract that from the reading, it has already been done.
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% weight=98
        zeroOffset(): number {
            this.start()
            const values = this._zeroOffset.pauseUntilValues() as any[]
            return values[0]
        }

        /**
         * Calibrated zero offset error on the scale, i.e. the measured weight when nothing is on the scale.
         * You do not need to subtract that from the reading, it has already been done.
         */
        //% group="Weight Scale"
        //% weight=97
        setZeroOffset(value: number) {
            this.start()
            const values = this._zeroOffset.values as any[]
            values[0] = value
            this._zeroOffset.values = values as [number]
        }

        /**
         * Calibrated gain on the weight scale error.
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% weight=96
        gain(): number {
            this.start()
            const values = this._gain.pauseUntilValues() as any[]
            return values[0]
        }

        /**
         * Calibrated gain on the weight scale error.
         */
        //% group="Weight Scale"
        //% weight=95
        setGain(value: number) {
            this.start()
            const values = this._gain.values as any[]
            values[0] = value
            this._gain.values = values as [number]
        }

        /**
         * Maximum supported weight on the scale.
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% weight=94
        maxWeight(): number {
            this.start()
            const values = this._maxWeight.pauseUntilValues() as any[]
            return values[0]
        }

        /**
         * Minimum recommend weight on the scale.
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% weight=93
        minWeight(): number {
            this.start()
            const values = this._minWeight.pauseUntilValues() as any[]
            return values[0]
        }

        /**
         * Smallest, yet distinguishable change in reading.
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% weight=92
        weightResolution(): number {
            this.start()
            const values = this._weightResolution.pauseUntilValues() as any[]
            return values[0]
        }

        /**
         * The type of physical scale
         */
        //% callInDebugger
        //% group="Weight Scale"
        //% weight=91
        variant(): jacdac.WeightScaleVariant {
            this.start()
            const values = this._variant.pauseUntilValues() as any[]
            return values[0]
        }

        /**
         * Run code when the weight changes by the given threshold value.
         */
        //% group="Weight Scale"
        //% blockId=jacdac_weightscale_on_weight_change
        //% block="on %weightscale weight changed by %threshold (kg)"
        //% weight=90
        //% threshold.min=0
        //% threshold.defl=1
        onWeightChangedBy(threshold: number, handler: () => void): void {
            this.onReadingChangedBy(threshold, handler)
        }

        /**
         * Call this command when there is nothing on the scale. If supported, the module should save the calibration data.
         */
        //% group="Weight Scale"
        //% blockId=jacdac_weightscale_calibrate_zero_offset_cmd
        //% block="%weightscale calibrate zero offset"
        //% weight=89
        calibrateZeroOffset(): void {
            this.start()
            this.sendCommand(
                jacdac.JDPacket.onlyHeader(
                    jacdac.WeightScaleCmd.CalibrateZeroOffset
                )
            )
        }

        /**
         * Call this command with the weight of the thing on the scale.
         */
        //% group="Weight Scale"
        //% blockId=jacdac_weightscale_calibrate_gain_cmd
        //% block="%weightscale calibrate gain $weight"
        //% weight=88
        calibrateGain(weight: number): void {
            this.start()
            this.sendCommand(
                jacdac.JDPacket.jdpacked(
                    jacdac.WeightScaleCmd.CalibrateGain,
                    jacdac.WeightScaleCmdPack.CalibrateGain,
                    [weight]
                )
            )
        }
    }

    //% fixedInstance whenUsed weight=1 block="weight scale1"
    export const weightScale1 = new WeightScaleClient("weight Scale1")
}