package main

import (
	"flag"
	"fmt"
	"log"
	"path/filepath"

	"ur.gs/chaos-gate/internal/data"
	"ur.gs/chaos-gate/internal/maps"
)

var (
	gamePath = flag.String("game-path", "./orig", "Path to a WH40K: Chaos Gate installation")
)

func main() {
	flag.Parse()

	loadData()
	loadObj()

	loadMapsFrom("Maps")
	loadMapsFrom("MultiMaps")
}

func loadData() {
	dataPath := filepath.Join(*gamePath, "Data")
	accountingPath := filepath.Join(dataPath, "Accounting.dat")
	genericDataPath := filepath.Join(dataPath, "GenericData.dat")
	aniObDefPath := filepath.Join(dataPath, "AniObDef.dat")

	log.Printf("Loading %s...", accountingPath)
	accounting, err := data.LoadAccounting(accountingPath)
	if err != nil {
		log.Fatalf("Failed to parse %s: %s", accountingPath, err)
	}

	log.Printf("%s: %+v", accountingPath, accounting)

	log.Printf("Loading %s...", aniObDefPath)
	animated, err := data.LoadAnimatedObjectDefinitions(aniObDefPath)
	if err != nil {
		log.Fatalf("Failed to parse %s: %s", genericDataPath, err)
	}

	log.Printf("%s: %+v", aniObDefPath, animated)

	log.Printf("Loading %s...", genericDataPath)
	genericData, err := data.LoadGeneric(genericDataPath)
	if err != nil {
		log.Fatalf("Failed to parse %s: %s", genericDataPath, err)
	}

	log.Printf("%s: %+v", genericDataPath, genericData)
}

func loadObj() {
	objDataPath := filepath.Join(*gamePath, "Obj")

	// TODO: Obj/cpiece.rec isn't loaded by this. Do we need it? How do we know?
	log.Printf("Loading %s...", objDataPath)
	objects, err := data.LoadObjects(objDataPath)
	if err != nil {
		log.Fatalf("Failed to parse %s: %s", objDataPath, err)
	}

	inspect := "c_webs"
	inspect_obj := inspect + ".obj"

	log.Printf("Objects in %s:", objDataPath)
	for key, obj := range objects {
		if key != inspect_obj {
			continue
		}
		log.Printf(
			"\t%s\t%d frames\t%d bytes",
			key, obj.ObjectHeader.NumFrames, obj.ObjectHeader.FrameDataSize,
		)
	}

	log.Printf("%s: %#v", inspect, objects[inspect_obj])

	for i, frame := range objects[inspect_obj].Frames {
		numPixels := frame.Width * frame.Height
		log.Printf("frame %d: w=%d h=%d sz=%d w*h=%d bpp=%v", i, frame.Width, frame.Height, frame.PixelSize, numPixels, float64(frame.PixelSize)/float64(numPixels))
	}
}

func loadMapsFrom(part string) {
	mapsPath := filepath.Join(*gamePath, part)
	log.Printf("Loading maps from %s", mapsPath)

	gameMaps, err := maps.LoadGameMaps(mapsPath)
	if err != nil {
		log.Fatalf("Failed to parse %s/*.{MAP,txt} as game maps: %v", mapsPath, err)
	}

	log.Printf("Maps in %s:", mapsPath)
	for key, gameMap := range gameMaps {
		hdr := gameMap.Header
		fmt.Printf(
			"    * `%s`: IsCampaignMap=%v W=%v:%v L=%v:%v SetName=%s\n",
			key,
			hdr.IsCampaignMap,
			hdr.MinWidth, hdr.MaxWidth,
			hdr.MinLength, hdr.MaxLength,
			string(hdr.SetName[:]),
		)
	}
}