package web

import (
	"database/sql"
	"github.com/martinlehoux/biking_home/internal/ridetest"
	"testing"
	"time"

	"github.com/martinlehoux/biking_home/official_climb"
	"github.com/martinlehoux/biking_home/ride"
	"github.com/martinlehoux/biking_home/rideanalysis"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

var testRideStart = time.Date(2026, 9, 1, 8, 0, 0, 0, time.UTC)

func testRideForClimb(t *testing.T) (ride.Ride, official_climb.OfficialClimb) {
	t.Helper()
	parsed := ridetest.MustRide("1km at 14.7% | 1km at -6.7%", ridetest.StartCoord(43.61, 5.42), ridetest.StartElevation(300), ridetest.Sampling(1000), ridetest.StartTime(testRideStart))
	return parsed, official_climb.OfficialClimb{Name: "Col de Test", StartCoord: parsed.Coords[0], EndCoord: parsed.Coords[1]}
}

func insertTestRide(t *testing.T, db *sql.DB) int64 {
	t.Helper()
	result, err := db.Exec(`
		INSERT INTO rides (external_id, gpx_path, name, external_sport_type, start_date, distance_m, external_moving_time_s, elapsed_time_s, total_elevation_gain_m, average_speed_mps)
		VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
	`, "strava:climb-test", "missing.gpx", "Test Ride", "Ride", "2026-09-01T08:00:00Z", 20_000, 0, 0, 0, 0)
	require.NoError(t, err)
	id, err := result.LastInsertId()
	require.NoError(t, err)
	return id
}

func TestAttemptsFromAnalysisSnapshotsOfficialClimbs(t *testing.T) {
	parsed, climb := testRideForClimb(t)
	analysis := rideanalysis.Analyze(parsed, nil, []official_climb.OfficialClimb{{ID: 42, Name: climb.Name, StartCoord: climb.StartCoord, EndCoord: climb.EndCoord}}, official_climb.DefaultMatchPolicy())

	attempts := attemptsFromAnalysis(7, analysis, parsed)
	require.Len(t, attempts, 1)
	assert.Equal(t, int64(7), attempts[0].RideID)
	assert.Equal(t, int64(42), attempts[0].ClimbID)
	assert.Equal(t, 0, attempts[0].Occurrence)
	assert.InDelta(t, 1000, attempts[0].DistanceM, 1)
	assert.InDelta(t, 147, attempts[0].ElevationGainM, 1)
	assert.InDelta(t, 14.7, attempts[0].SlopePercent, 0.1)
	assert.Positive(t, attempts[0].Cotacol)
	assert.Equal(t, "v1", attempts[0].CotacolAlgoVersion)
	assert.Equal(t, testRideStart, attempts[0].StartedAt.UTC())
	assert.False(t, attempts[0].EndedAt.IsZero(), "attempt end must come from ride timestamps")
}

func TestAttemptsFromAnalysisSkipsUnmatchedClimbs(t *testing.T) {
	parsed, _ := testRideForClimb(t)
	analysis := rideanalysis.Analyze(parsed, nil, nil, official_climb.DefaultMatchPolicy())

	attempts := attemptsFromAnalysis(7, analysis, parsed)
	assert.Empty(t, attempts)
}

func TestRecordOfficialClimbAttemptsPersistsAndReplaces(t *testing.T) {
	server, db := newWebTestServer(t)
	rideID := insertTestRide(t, db)
	parsed, climb := testRideForClimb(t)
	created, err := official_climb.Create(db, climb)
	require.NoError(t, err)
	analysis := rideanalysis.Analyze(parsed, nil, []official_climb.OfficialClimb{created}, official_climb.DefaultMatchPolicy())

	server.recordOfficialClimbAttempts(rideID, parsed, analysis)
	attempts, err := official_climb.AttemptsForClimb(db, created.ID)
	require.NoError(t, err)
	require.Len(t, attempts, 1)
	assert.Equal(t, rideID, attempts[0].RideID)

	// Re-recording replaces, never duplicates.
	server.recordOfficialClimbAttempts(rideID, parsed, analysis)
	attempts, err = official_climb.AttemptsForClimb(db, created.ID)
	require.NoError(t, err)
	require.Len(t, attempts, 1)
}