102 lines
1.7 KiB
TypeScript
102 lines
1.7 KiB
TypeScript
import {Module} from "@/interfaces";
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type Type = "academic" | "general";
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export const writingReverseMarking: {[key: number]: number} = {
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9: 90,
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8: 80,
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7: 70,
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6: 60,
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5: 50,
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4: 40,
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3: 30,
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2: 20,
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1: 10,
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0: 0,
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};
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const writingMarking: {[key: number]: number} = {
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90: 9,
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80: 8,
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70: 7,
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60: 6,
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50: 5,
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40: 4,
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30: 3,
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20: 2,
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10: 1,
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0: 0,
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};
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const readingGeneralMarking: {[key: number]: number} = {
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100: 9,
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97.5: 8.5,
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92.5: 8,
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90: 7.5,
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85: 7,
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80: 6.5,
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75: 6,
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67.5: 5.5,
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57.5: 5,
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45.5: 4.5,
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37.5: 4,
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30: 3.5,
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22.5: 3,
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15: 2.5,
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};
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const academicMarking: {[key: number]: number} = {
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97.5: 9,
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92.5: 8.5,
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87.5: 8,
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80: 7.5,
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75: 7,
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65: 6.5,
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57.5: 6,
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45: 5.5,
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40: 5,
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32.5: 4.5,
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25: 4,
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20: 3.5,
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15: 3,
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10: 2.5,
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};
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const moduleMarkings: {[key in Module]: {[key in Type]: {[key: number]: number}}} = {
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reading: {
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academic: academicMarking,
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general: readingGeneralMarking,
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},
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listening: {
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academic: academicMarking,
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general: academicMarking,
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},
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writing: {
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academic: writingMarking,
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general: writingMarking,
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},
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speaking: {
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academic: academicMarking,
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general: academicMarking,
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},
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};
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export const calculateBandScore = (correct: number, total: number, module: Module, type: Type) => {
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const marking = moduleMarkings[module][type];
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const percentage = (correct * 100) / total;
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for (const value of Object.keys(marking)
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.map((x) => parseFloat(x))
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.sort((a, b) => b - a)) {
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if (percentage >= value) {
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return marking[value];
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}
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}
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return 0;
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};
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export const calculateAverageLevel = (levels: {[key in Module]: number}) => {
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return Object.keys(levels).reduce((accumulator, current) => levels[current as Module] + accumulator, 0) / 4;
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};
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