zooble / text-to-audio

Page({
    data: {
        total: '',
        benefit: '',
        diff: ''
    },
    onLoad: function(options){
        var total = new Number((options.price*2*options.days).toFixed(2));
        var benefit = isNaN(total) ? 0 : this.calc(total).toFixed(2);
        this.setData({
            total: isNaN(total) ? 0 : total.toFixed(2),
            benefit: benefit,
            diff: (total - benefit).toFixed(2)
        });
        wx.showShareMenu();
    },
    calc: function(fee){
        //662.5 = 100 + 50/0.8 + 250/0.5
        if(fee > 662.5){
            return fee - 262.5;
        }
        //162.5 = 100 + 50/0.8
        else if(fee > 162.5){
            //(fee - 162.5)/2 + 150;
            return fee/2 + 68.75;
        }
        else if(fee > 100){ 
            //(fee - 100)*0.8 + 100;
            return fee*0.8 + 20;
        }
        else{
            return fee;
        }
    }
});