import test from "node:test";
import assert from "node:assert/strict";
import {
  categoryForCotacol,
  climbMetrics,
  cotacolForClimb,
  elevationAtDistance,
  formatClimbLabel,
  formatDistance,
  formatElevation,
  nearestPointIndex,
} from "./ride-detail-logic.ts";

const points = [
  { distanceKm: 0, elevationM: 100 },
  { distanceKm: 0.12, elevationM: 106 },
  { distanceKm: 0.2, elevationM: 114 },
  { distanceKm: 0.25, elevationM: 120 },
];

test("finds the nearest profile point by distance", () => {
  assert.equal(nearestPointIndex(points, 0.01), 0);
  assert.equal(nearestPointIndex(points, 0.15), 1);
  assert.equal(nearestPointIndex(points, 0.24), 3);
});

test("interpolates elevation between route points", () => {
  assert.equal(elevationAtDistance(points, 0, 100), 105);
  assert.equal(elevationAtDistance(points, 2, 250), 120);
});

test("calculates climb metrics with Cotacol", () => {
  const metrics = climbMetrics(points, { startIndex: 0, endIndex: 3 });
  assert.ok(metrics);

  assert.equal(metrics.distanceKm, 0.25);
  assert.equal(metrics.elevationGain, 20);
  assert.equal(metrics.slope, 8);
  assert.equal(metrics.cotacol, cotacolForClimb(points, 0, 3));
  assert.equal(metrics.category, categoryForCotacol(metrics.cotacol));
});

test("formats profile climb labels with Cotacol", () => {
  assert.equal(formatClimbLabel("", "Cat 4", 45.9), "Cat 4 45.9");
  assert.equal(formatClimbLabel("Col de Test", "Cat 4", 45.9), "Col de Test");
});

test("formats profile labels consistently", () => {
  assert.equal(formatDistance(2.4), "2.4 km");
  assert.equal(formatDistance(12.4), "12 km");
  assert.equal(formatElevation(123.6), "124 m");
});