David Fencl
53 lines
1.5 KiB
TypeScript
53 lines
1.5 KiB
TypeScript
export interface LakeCalculationConfig {
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maxVolume?: number;
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minLevel?: number;
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maxLevel?: number;
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storageLevel?: number;
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}
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export interface LakeMetrics {
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capacity: number; // 0-100 percentage
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volume: number; // in mil. m3
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storageDiff: number; // in meters
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}
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export function calculateLakeMetrics(
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currentLevel: number,
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reportedVolume: number,
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config: LakeCalculationConfig
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): LakeMetrics {
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let capacity = 0;
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let volume = reportedVolume;
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let storageDiff = 0;
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// 1. Calculate capacity and volume
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if (volume > 0 && config.maxVolume && config.maxVolume > 0) {
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// If real volume is available, calculate capacity from volume
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capacity = Math.max(0, Math.min(100, Math.round((volume / config.maxVolume) * 1000) / 10));
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} else if (config.minLevel && config.maxLevel && currentLevel > 0) {
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// Fallback: estimate capacity and volume from level difference
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const percentage = ((currentLevel - config.minLevel) / (config.maxLevel - config.minLevel)) * 100;
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capacity = Math.max(0, Math.min(100, Math.round(percentage * 10) / 10)); // Round to 1 decimal place
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if (volume === 0) {
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volume = Number(((capacity / 100) * (config.maxVolume || 0)).toFixed(1));
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}
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} else {
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// Missing required config data or bad level
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if (volume === 0) {
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volume = config.maxVolume || 0;
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}
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}
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// 2. Calculate storage difference
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if (config.storageLevel && currentLevel > 0) {
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storageDiff = Number((currentLevel - config.storageLevel).toFixed(2));
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}
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return {
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capacity,
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volume,
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storageDiff
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};
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}
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