validator.go

// validator
package main

import (
	"errors"
	"image/jpeg"
	"os"
	"path/filepath"
	"strconv"
)

var FRAME_PATH = filepath.Join("y:", "Web Product Photography", "001_RFU", "NonBrands")

func (f Frame) validate() (bool, []error) {
	var errs []error

	errs = append(errs, f.validateFolder()...)
	errs = append(errs, f.validate360()...)
	errs = append(errs, f.validateDescription()...)
	errs = append(errs, f.validateFront()...)
	errs = append(errs, f.validateVTO()...)

	if errs != nil {
		return false, errs
	}

	return true, errs
}

func (f Frame) validateFolder() []error {
	var errs []error

	fullPath := filepath.Join(FRAME_PATH, f.sku)
	ext, err := exists(fullPath)
	if err != nil || ext == false {
		errs = append(errs, errors.New("Root Folder Not Found: "+fullPath))
	}

	return errs
}

func (f Frame) validate360() []error {
	var errs []error

	for rot := 1; rot < 33; rot++ {
		cNum := strPad(strconv.Itoa(rot))
		cImage := f.sku + "_" + cNum + ".jpg"
		iPath := filepath.Join(FRAME_PATH, f.sku, "edits", cImage)

		// Check that it exists
		ext, err := exists(iPath)
		if err != nil || ext == false {
			errs = append(errs, errors.New("360 Not Found: "+iPath))
		}

		// If file does exist validate it
		if ext {
			file, _ := os.Open(iPath)
			defer file.Close()

			info, err := jpeg.DecodeConfig(file)
			if err != nil {
				errs = append(errs, errors.New("360 Invalid Image: "+iPath))
				continue
			}

			if info.Height != 2848 || info.Width != 4272 {
				errs = append(errs, errors.New("360 Wrong Size: "+iPath))
			}
		}

	}

	return errs
}

func (f Frame) validateDescription() []error {
	var errs []error

	descFile := filepath.Join(FRAME_PATH, f.sku, f.sku+".txt")
	ext, err := exists(descFile)
	if err != nil || ext == false {
		errs = append(errs, errors.New("Description Not Found: "+descFile))
	}

	return errs
}

func (f Frame) validateFront() []error {
	var errs []error

	descFile := filepath.Join(FRAME_PATH, f.sku, "main.front.jpg")
	ext, err := exists(descFile)
	if err != nil || ext == false {
		errs = append(errs, errors.New("Front Not Found: "+descFile))
	}

	return errs
}

func (f Frame) validateVTO() []error {
	var errs []error

	descFile := filepath.Join(FRAME_PATH, f.sku, "edits", f.sku+"_vto.png")
	ext, err := exists(descFile)
	if err != nil || ext == false {
		errs = append(errs, errors.New("Front Not Found: "+descFile))
	}

	return errs
}

func strPad(number string) string {
	if len(number) < 2 {
		return "0" + number
	}

	return number
}

func exists(path string) (bool, error) {
	_, err := os.Stat(path)
	if err == nil {
		return true, nil
	}
	if os.IsNotExist(err) {
		return false, nil
	}
	return false, err
}