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path: root/steam/steam.go
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// This is designed to be a rather simplistic library to help pull information
// from a local steam library
package steam

import (
	"fmt"
	"io/ioutil"

	"errors"

	"bufio"
	"os"
	"path/filepath"
	"strings"
	// "log"
)

type Library struct {
	Folder string
	Games  []string
}

func ProcessMultipleLibraries(r []string) ([]*Library, error) {
	var libs []*Library
	for _, i := range r {
		lib := &Library{}
		err := lib.ProcessLibrary(i)
		if err != nil {
			return nil, err
		}
		libs = append(libs, lib)
	}
	return libs, nil
}

// Populate the "Folder" and "Games" fields based on the provided directory
func (s *Library) ProcessLibrary(r string) error {
	if hasCommon(r) {
		dirs, err := ioutil.ReadDir(r + "/common")
		if err != nil {
			return err
		}
		s.Folder = r
		for _, f := range dirs {
			if f.IsDir() {
				s.Games = append(s.Games, f.Name())
			}
		}
	} else {
		return errors.New(fmt.Sprintf("No common directory in: %s", r))
	}
	return nil
}

// Find the ACF files related to this video game
func (l *Library) FindACF(g string) (string, error) {
	working_dir, err := os.Getwd()
	if err != nil {
		return "", err
	}
	if err = os.Chdir(l.Folder); err != nil {
		return "", err
	}
	files, err := filepath.Glob("*.acf")
	if err != nil {
		return "", err
	}
	for _, fn := range files {
		info, err := os.Lstat(fn)
		if err != nil {
			return "", err
		}
		// We don't want it if it's a directory
		if info.IsDir() {
			continue
		}

		// Open up the file
		f, err := os.Open(fn)
		defer f.Close()
		if err != nil {
			return "", err
		}
		scanner := bufio.NewScanner(f)
		for scanner.Scan() {
			// Finally check and see if the file has the video game name
			if strings.Contains(scanner.Text(), g) {
				os.Chdir(working_dir)
				return fn, nil
				// fmt.Printf("%s/%s:%d: %s\n", root, path, i, scanner.Text())
			}
		}

	}
	str := "Couldn't find ACF file related to Game: %s"
	return "", errors.New(fmt.Sprintf(str, g))
}

// This is automatically called to print out the contents of the struct
// when things like fmt.Println are used
func (s *Library) String() (str string) {
	str = fmt.Sprintln("\n----")
	str = str + fmt.Sprintln(s.Folder)
	str = str + "\n----\n"
	for k, v := range s.Games {
		str = str + fmt.Sprintf("%d: %s\n", k, v)
		//str = str + fmt.Sprintln(v)
	}
	return
}

func hasCommon(d string) bool {
	dirs, err := ioutil.ReadDir(d)
	if err != nil {
		return false
	}
	for _, f := range dirs {
		if f.Name() == "common" && f.IsDir() {
			return true
		}
	}
	return false
}