feat(ui): course color picker (#382)

* fix: update CourseCellColorPicker.tsx background to white

* feat: add color picker to CalendarCourseCell component

* feat: add color picker functionality to update course colors

* fix: type issues with storybook components

* feat: add useColorPicker hook, isValidHexColor and updateCourseColors utilities

* refactor: color picker logic and UI components

* refactor: update useFlattenedCourseSchedule hook to include courseID property

* refactor: update storybook calendar components with updated props

* refactor: update color picker ui logic to account for position of cell

* fix: revert back to error handling for invalid rgb

* refactor: update jsdocs

* refactor: integrate ColorPickerContext into Calendar components and update props

* refactor: integrate ColorPickerContext into Calendar components and update related props

* refactor: change JSDocs comments and remove unused color inversion state

* refactor: update story components

* feat: add functionality for selecting secondary course colors

* refactor: enhance HexColorEditor to dynamically adjust tag icon color based on preview color

* refactor: simplify JSDoc comment in useColorPicker hook

* fix: revert Button component

* refactor: update CalendarCourseCell component positioning and styling

* fix: correct types in color.ts

* feat: add getDarkerShade function to compute darker shades of hex colors

* feat: add shadow to color picker button

* fix: update button size in ColorPatch component

* feat: implement debounced input for hex color editor and add useDebounce hook

* chore: utilize the logical and && operator instead of the ternary operator

* fix: imports and palette icon

* refactor: remove unused import

* fix: bug when course add fails with custom colors

* chore: run lint

* chore: run check-types

* feat: add HSL color type and conversion functions

* refactor: rename colorway to theme

* fix: hide color picker on screenshot

* fix: undo important syntax

* refactor: rename SomeFunction to DebouncedCallback

* refactor: remove inner function

* refactor: update return type to DebouncedCallback

* fix: adjust sizes for hash and palette button

* feat: create tests for hexToHSL and isValidHexColor

* refactor: update parameter type to use HexColor

* fix: increase size of palette button

* fix: update dependency array for hex code debounce

* fix: change colorPickerRef element ref

---------

Co-authored-by: doprz <52579214+doprz@users.noreply.github.com>

src/views/hooks/useSchedules.ts

@@ -1,5 +1,7 @@
 import { UserScheduleStore } from '@shared/storage/UserScheduleStore';
+import type { HexColor } from '@shared/types/Color';
 import { UserSchedule } from '@shared/types/UserSchedule';
+import { getColorwayFromColor, getCourseColors, getDarkerShade } from '@shared/util/colors';
 import { useEffect, useState } from 'react';
 
 let schedulesCache: UserSchedule[] = [];
@@ -89,7 +91,6 @@ export async function replaceSchedule(oldSchedule: UserSchedule, newSchedule: Us
     oldIndex = oldIndex !== -1 ? oldIndex : 0;
     schedules[oldIndex] = newSchedule;
     await UserScheduleStore.set('schedules', schedules);
-    console.log('schedule replaced');
 }
 
 /**
@@ -115,3 +116,46 @@ export async function switchScheduleByName(name: string): Promise<void> {
     const activeIndex = schedules.findIndex(s => s.name === name);
     await UserScheduleStore.set('activeIndex', activeIndex);
 }
+
+/**
+ * Updates the color of a course in the active schedule.
+ *
+ * @param courseID - The ID of the course to update.
+ * @param color - The new color to set for the course.
+ * @throws If the course with the given ID is not found.
+ */
+export async function updateCourseColors(courseID: number, primaryColor: HexColor) {
+    const activeSchedule = getActiveSchedule();
+    const updatedCourseIndex = activeSchedule.courses.findIndex(c => c.uniqueId === courseID);
+
+    if (updatedCourseIndex === -1) {
+        throw new Error(`Course with ID ${courseID} not found`);
+    }
+
+    const newSchedule = new UserSchedule(activeSchedule);
+    const updatedCourse = newSchedule.courses[updatedCourseIndex];
+
+    if (!updatedCourse) {
+        throw new Error(`Course with ID ${courseID} not found`);
+    }
+
+    let secondaryColor: HexColor;
+    try {
+        const { colorway: primaryColorWay, index: primaryIndex } = getColorwayFromColor(primaryColor);
+        const { secondaryColor: colorFromWay } = getCourseColors(primaryColorWay, primaryIndex, 400);
+
+        if (!colorFromWay) {
+            throw new Error('Secondary color not found');
+        }
+
+        secondaryColor = colorFromWay;
+    } catch (e) {
+        secondaryColor = getDarkerShade(primaryColor, 80);
+    }
+
+    updatedCourse.colors.primaryColor = primaryColor;
+    updatedCourse.colors.secondaryColor = secondaryColor;
+    newSchedule.courses[updatedCourseIndex] = updatedCourse;
+
+    await replaceSchedule(activeSchedule, newSchedule);
+}