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import { displayStepForLength, officialProfileSections } from "./official-climb-profile-logic.js";
import type { OfficialProfileColors, RideProfilePoint } from "./types.js";
export class OfficialClimbProfileController {
readonly points: RideProfilePoint[];
readonly colors: OfficialProfileColors;
readonly cards: HTMLDetailsElement[];
constructor(points: RideProfilePoint[]) {
this.points = points;
this.colors = this.resolveColors();
this.cards = [...document.querySelectorAll("[data-official-climb-card]")].map((card) => card as HTMLDetailsElement);
for (const card of this.cards) {
card.addEventListener("toggle", () => {
if (!card.open) return;
for (const other of this.cards) {
if (other !== card) other.open = false;
}
const profileCanvas = card.querySelector<HTMLCanvasElement>("[data-official-profile]");
if (profileCanvas) this.drawOfficialProfile(profileCanvas);
});
}
}
resolveColors(): OfficialProfileColors {
const colorProbe = document.createElement("span");
colorProbe.hidden = true;
document.body.append(colorProbe);
const resolveColor = (name: string): string => {
colorProbe.style.color = `var(${name})`;
return getComputedStyle(colorProbe).color;
};
const colors = {
downhill: resolveColor("--color-profile-downhill"),
"0-3": resolveColor("--color-profile-0-3"),
"3-6": resolveColor("--color-profile-3-6"),
"6-9": resolveColor("--color-profile-6-9"),
"9-12": resolveColor("--color-profile-9-12"),
"12-plus": resolveColor("--color-profile-12-plus"),
plotSurface: resolveColor("--color-plot-surface"),
grid: resolveColor("--color-plot-grid"),
subtle: resolveColor("--color-subtle"),
accent: resolveColor("--color-accent"),
};
colorProbe.remove();
return colors;
}
drawOfficialProfile(profileCanvas: HTMLCanvasElement): void {
const { points, colors } = this;
const startIndex = Number.parseInt(profileCanvas.dataset.profileStart ?? "", 10);
const endIndex = Number.parseInt(profileCanvas.dataset.profileEnd ?? "", 10);
if (
!Number.isInteger(startIndex) ||
!Number.isInteger(endIndex) ||
startIndex < 0 ||
endIndex >= points.length ||
startIndex >= endIndex
)
return;
const rect = profileCanvas.getBoundingClientRect();
if (rect.width === 0 || rect.height === 0) return;
const context = profileCanvas.getContext("2d");
if (!context) return;
const ratio = window.devicePixelRatio || 1;
profileCanvas.width = Math.floor(rect.width * ratio);
profileCanvas.height = Math.floor(rect.height * ratio);
context.setTransform(ratio, 0, 0, ratio, 0, 0);
const plot = { left: 10, right: rect.width - 10, top: 16, bottom: rect.height - 24 };
const climbLengthM = (points[endIndex].distanceKm - points[startIndex].distanceKm) * 1000;
const sections = officialProfileSections(points, startIndex, endIndex, displayStepForLength(climbLengthM));
if (sections.length === 0) return;
let minElevation = sections[0].startElevation;
let maxElevation = minElevation;
for (const section of sections) {
minElevation = Math.min(minElevation, section.startElevation, section.endElevation);
maxElevation = Math.max(maxElevation, section.startElevation, section.endElevation);
}
const elevationPadding = Math.max((maxElevation - minElevation) * 0.12, 8);
minElevation -= elevationPadding;
maxElevation += elevationPadding;
const minDistance = sections[0].startDistanceKm;
const maxDistance = sections[sections.length - 1].endDistanceKm;
const distanceSpan = Math.max(maxDistance - minDistance, 0.1);
const elevationSpan = Math.max(maxElevation - minElevation, 1);
const xForDistance = (distanceKm: number) => plot.left + ((distanceKm - minDistance) / distanceSpan) * (plot.right - plot.left);
const yForElevation = (elevationM: number) => plot.bottom - ((elevationM - minElevation) / elevationSpan) * (plot.bottom - plot.top);
context.clearRect(0, 0, rect.width, rect.height);
context.fillStyle = colors.plotSurface;
context.fillRect(0, 0, rect.width, rect.height);
context.strokeStyle = colors.grid;
context.lineWidth = 1;
context.beginPath();
context.moveTo(plot.left, plot.bottom);
context.lineTo(plot.right, plot.bottom);
context.stroke();
for (const section of sections) {
const startX = xForDistance(section.startDistanceKm);
const endX = xForDistance(section.endDistanceKm);
context.beginPath();
context.moveTo(startX, plot.bottom);
context.lineTo(startX, yForElevation(section.startElevation));
context.lineTo(endX, yForElevation(section.endElevation));
context.lineTo(endX, plot.bottom);
context.closePath();
context.globalAlpha = 0.25;
context.fillStyle = colors[section.band];
context.fill();
context.globalAlpha = 1;
context.beginPath();
context.moveTo(startX, yForElevation(section.startElevation));
context.lineTo(endX, yForElevation(section.endElevation));
context.strokeStyle = colors[section.band];
context.lineWidth = 2.5;
context.stroke();
}
context.font = "9px system-ui, sans-serif";
context.fillStyle = colors.subtle;
context.textBaseline = "bottom";
context.textAlign = "center";
context.save();
context.beginPath();
context.rect(plot.left, plot.top, plot.right - plot.left, plot.bottom - plot.top);
context.clip();
for (const section of sections) {
const startX = xForDistance(section.startDistanceKm);
const endX = xForDistance(section.endDistanceKm);
const label = `${section.slopePercent.toFixed(1)}%`;
const labelY = Math.max(plot.top + 10, Math.min(yForElevation(section.startElevation), yForElevation(section.endElevation)) - 4);
context.fillText(label, (startX + endX) / 2, labelY);
}
context.restore();
let topElevation = sections[0].startElevation;
let topDistance = sections[0].startDistanceKm;
for (const section of sections) {
if (section.startElevation > topElevation) {
topElevation = section.startElevation;
topDistance = section.startDistanceKm;
}
if (section.endElevation > topElevation) {
topElevation = section.endElevation;
topDistance = section.endDistanceKm;
}
}
context.fillStyle = colors.accent;
context.beginPath();
context.arc(xForDistance(topDistance), yForElevation(topElevation), 3.5, 0, 2 * Math.PI);
context.fill();
context.font = "11px system-ui, sans-serif";
context.fillStyle = colors.subtle;
context.textBaseline = "top";
context.textAlign = "left";
context.fillText(this.formatDistance(0), plot.left, rect.height - 16);
context.textAlign = "right";
context.fillText(this.formatDistance(maxDistance - minDistance), plot.right, rect.height - 16);
}
formatDistance(distance: number): string {
return `${distance.toFixed(distance < 10 ? 1 : 0)} km`;
}
redrawOpen() {
const profileCanvases = document.querySelectorAll<HTMLCanvasElement>("[data-official-profile]");
for (const profileCanvas of profileCanvases) {
const card = profileCanvas.closest<HTMLDetailsElement>("[data-official-climb-card]");
if (card?.open) this.drawOfficialProfile(profileCanvas);
}
}
}
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