51 lines
1.4 KiB
Go
51 lines
1.4 KiB
Go
package db
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type Units uint64
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const (
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COUNT = Units(iota + 1)
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GRAMS
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LBS
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OZ
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ML
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CUPS
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TSP
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TBSP
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FLOZ
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)
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var names = []string{"", "count", "grams", "pounds", "ounces", "milliliters", "cups", "teaspoons", "tablespoons", "fluid ounces"}
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var abbreviations = []string{"", "ct", "g", "lbs", "oz", "mL", "cups", "tsp", "tbsp", "fl-oz"}
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func (u Units) Name() string {
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return names[u]
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}
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func (u Units) Abbreviation() string {
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return abbreviations[u]
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}
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func (u Units) Of(f Food, n float32) Ingredient {
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switch u {
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case COUNT:
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return Ingredient{FoodID: f.ID, Quantity: n, Units: u, Food: f}
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case GRAMS:
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return Ingredient{FoodID: f.ID, Quantity: n / f.Mass, Units: u, Food: f}
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case LBS:
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return Ingredient{FoodID: f.ID, Quantity: n * 454 / f.Mass, Units: u, Food: f}
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case OZ:
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return Ingredient{FoodID: f.ID, Quantity: n * 28 / f.Mass, Units: u, Food: f}
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case ML:
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return Ingredient{FoodID: f.ID, Quantity: n * f.Density / f.Mass, Units: u, Food: f}
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case CUPS:
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return Ingredient{FoodID: f.ID, Quantity: n * f.Density * 250 / f.Mass, Units: u, Food: f}
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case TSP:
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return Ingredient{FoodID: f.ID, Quantity: n * f.Density * 5 / f.Mass, Units: u, Food: f}
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case TBSP:
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return Ingredient{FoodID: f.ID, Quantity: n * f.Density * 15 / f.Mass, Units: u, Food: f}
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case FLOZ:
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return Ingredient{FoodID: f.ID, Quantity: n * f.Density * 30 / f.Mass, Units: u, Food: f}
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default:
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panic(u)
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}
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}
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