package chart import ( "fmt" "time" "github.com/blendlabs/go-util" ) // Series is a entity data set. type Series interface { GetName() string GetStyle() Style Len() int GetValue(index int) (float64, float64) GetXFormatter() Formatter GetYFormatter() Formatter } // TimeSeries is a line on a chart. type TimeSeries struct { Name string Style Style XValues []time.Time YValues []float64 } // GetName returns the name of the time series. func (ts TimeSeries) GetName() string { return ts.Name } // GetStyle returns the line style. func (ts TimeSeries) GetStyle() Style { return ts.Style } // Len returns the number of elements in the series. func (ts TimeSeries) Len() int { return len(ts.XValues) } // GetValue gets a value at a given index. func (ts TimeSeries) GetValue(index int) (x float64, y float64) { x = float64(ts.XValues[index].Unix()) y = ts.YValues[index] return } // GetXFormatter returns the x value formatter. func (ts TimeSeries) GetXFormatter() Formatter { return func(v interface{}) string { if typed, isTyped := v.(time.Time); isTyped { return typed.Format(DefaultDateFormat) } if typed, isTyped := v.(int64); isTyped { return time.Unix(typed, 0).Format(DefaultDateFormat) } if typed, isTyped := v.(float64); isTyped { return time.Unix(int64(typed), 0).Format(DefaultDateFormat) } return util.StringEmpty } } // GetYFormatter returns the y value formatter. func (ts TimeSeries) GetYFormatter() Formatter { return func(v interface{}) string { if typed, isTyped := v.(float64); isTyped { return fmt.Sprintf("%0.2f", typed) } return util.StringEmpty } } // ContinuousSeries represents a line on a chart. type ContinuousSeries struct { Name string Style Style XValues []float64 YValues []float64 } // GetName returns the name of the time series. func (cs ContinuousSeries) GetName() string { return cs.Name } // GetStyle returns the line style. func (cs ContinuousSeries) GetStyle() Style { return cs.Style } // Len returns the number of elements in the series. func (cs ContinuousSeries) Len() int { return len(cs.XValues) } // GetValue gets a value at a given index. func (cs ContinuousSeries) GetValue(index int) (float64, float64) { return cs.XValues[index], cs.YValues[index] } // GetXFormatter returns the xs value formatter. func (cs ContinuousSeries) GetXFormatter() Formatter { return func(v interface{}) string { if typed, isTyped := v.(float64); isTyped { return fmt.Sprintf("%0.2f", typed) } return util.StringEmpty } } // GetYFormatter returns the y value formatter. func (cs ContinuousSeries) GetYFormatter() Formatter { return cs.GetXFormatter() }