package main

import (
	"fmt"
	"slices"
	"strings"

	rl "github.com/gen2brain/raylib-go/raylib"
	"github.com/gocolly/colly"
)

func main() {

	c := colly.NewCollector()

	var links []string
	var texts []string

	c.OnHTML("a[href]", func(e *colly.HTMLElement) {
		link := e.Attr("href")
		fmt.Printf("Link found: %q -> %s\n", e.Text, link)
		if strings.Contains(link, "http") {
			links = append(links, link)
		}
	})

	c.OnHTML("div", func(h *colly.HTMLElement) {
		if !slices.Contains(texts, h.Text) {
			//fmt.Printf(h.Text)
			texts = append(texts, h.Text)
		}
	})

	c.OnRequest(func(r *colly.Request) {
		fmt.Println("Visiting", r.URL.String())
	})

	rl.InitWindow(800, 450, "raylib [core] example - 3d camera first person")

	camera := rl.Camera3D{}
	camera.Position = rl.NewVector3(4.0, 2.0, 4.0)
	camera.Target = rl.NewVector3(0.0, 0.5, 0.0)
	camera.Up = rl.NewVector3(0.0, 1.0, 0.0)
	camera.Fovy = 60.0
	camera.Projection = rl.CameraPerspective

	cubeScreenPosition := rl.Vector2{}

	// Generates some random columns
	var total int
	var positions []rl.Vector3
	var positions2D []rl.Vector2

	var t_total int
	var t_positions []rl.Vector3
	t_position2D := rl.NewVector2(0, 0)

	rl.SetTargetFPS(60)
	rl.DisableCursor()

	collision := "https://alfrescocavern.com/"
	t_collision := ""

	for !rl.WindowShouldClose() {

		if collision != "" {
			links = nil
			positions = nil
			positions2D = nil
			texts = nil
			t_positions = nil
			t_position2D = rl.NewVector2(0, 0)
			links = make([]string, 0)
			texts = make([]string, 0)

			c.Visit(collision)

			total = len(links)
			positions = make([]rl.Vector3, total)
			positions2D = make([]rl.Vector2, total)
			for i := 0; i < total; i++ {
				positions[i] = rl.NewVector3(float32(rl.GetRandomValue(-50, 50)),
					0.5,
					float32(rl.GetRandomValue(-50, 50)))
			}

			t_total = len(texts)
			t_positions = make([]rl.Vector3, t_total)
			for i := 0; i < t_total; i++ {
				t_positions[i] = rl.NewVector3(float32(rl.GetRandomValue(-50, 50)),
					0.5,
					float32(rl.GetRandomValue(-50, 50)))
			}
			collision = ""
		}

		rl.UpdateCamera(&camera, rl.CameraThirdPerson) // Update camera with first person mode

		rl.BeginDrawing()

		rl.ClearBackground(rl.RayWhite)

		rl.BeginMode3D(camera)

		cubeScreenPosition = rl.GetWorldToScreen(rl.NewVector3(camera.Target.X, camera.Target.Y+1.0, camera.Target.Z), camera)

		for i := 0; i < total; i++ {
			rl.DrawCube(positions[i], 1.0, 1.0, 1.0, rl.Maroon)
			pos := rl.NewVector3(positions[i].X, positions[i].Y+1.0, positions[i].Z)
			positions2D[i] = rl.GetWorldToScreen(pos, camera)

			// Check collisions player vs enemy-box
			if rl.CheckCollisionBoxes(
				rl.NewBoundingBox(
					rl.NewVector3(camera.Target.X-0.5, camera.Target.Y-0.5, camera.Target.Z-0.5),
					rl.NewVector3(camera.Target.X+0.5, camera.Target.Y+0.5, camera.Target.Z+0.5)),
				rl.NewBoundingBox(
					rl.NewVector3(positions[i].X-0.5, positions[i].Y-0.5, positions[i].Z-0.5),
					rl.NewVector3(positions[i].X+0.5, positions[i].Y+0.5, positions[i].Z+0.5)),
			) {
				collision = links[i]
			}

		}

		for i := 0; i < t_total; i++ {
			rl.DrawCube(t_positions[i], 1.0, 1.0, 1.0, rl.Blue)

			if rl.CheckCollisionBoxes(
				rl.NewBoundingBox(
					rl.NewVector3(camera.Target.X-0.5, camera.Target.Y-0.5, camera.Target.Z-0.5),
					rl.NewVector3(camera.Target.X+0.5, camera.Target.Y+0.5, camera.Target.Z+0.5)),
				rl.NewBoundingBox(
					rl.NewVector3(t_positions[i].X-0.5, t_positions[i].Y-0.5, t_positions[i].Z-0.5),
					rl.NewVector3(t_positions[i].X+0.5, t_positions[i].Y+0.5, t_positions[i].Z+0.5)),
			) {
				t_collision = texts[i]
				pos := rl.NewVector3(t_positions[i].X, t_positions[i].Y+1.0, t_positions[i].Z)
				t_position2D = rl.GetWorldToScreen(pos, camera)
			}
		}

		rl.DrawPlane(rl.NewVector3(0.0, 0.0, 0.0), rl.NewVector2(60.0, 60.0), rl.LightGray) // Draw ground

		rl.DrawCube(camera.Target, 1.0, 1.0, 1.0, rl.Green)

		rl.EndMode3D()

		rl.DrawText("User", int32(cubeScreenPosition.X)-rl.MeasureText("User", 20)/2, int32(cubeScreenPosition.Y), 20, rl.Black)

		for i := 0; i < len(links); i++ {
			rl.DrawText(links[i], int32(positions2D[i].X)-rl.MeasureText(links[i], 10)/2, int32(positions2D[i].Y), 10, rl.Maroon)
		}

		if t_collision != "" {
			rl.DrawText(t_collision, int32(t_position2D.X)-rl.MeasureText(t_collision, 10)/2, int32(t_position2D.Y+10), 10, rl.Blue)
		}

		rl.EndDrawing()
	}

	rl.EnableCursor()
	rl.CloseWindow()
}