package page

import (
	"fmt"
	"os"
	"path/filepath"
	"reflect"
	"strings"
)

// Checkup will return a map[string]PageList of all the pages broken down by
// the status of their fields. For instance, whehter or not they have a date.
func (p *Page) Checkup() (map[string]PageList, error) {
	Logger.Println("Checking up on all files...")

	out := make(map[string]PageList)

	_ = filepath.Walk(filepath.Dir("."),
		func(path string, info os.FileInfo, err error) error {
			if err != nil {
				return err
			}

			if !info.IsDir() && strings.HasSuffix(info.Name(), Suffix) {
				p2 := NewPage(strings.ReplaceAll(path, Suffix, ""))
				err = p2.Read()

				if err != nil {
					Logger.Println("Error encountered: ", err)

					return err
				}

				r := reflect.ValueOf(*p2)

				for i := 0; i < r.NumField(); i++ {
					key := ""
					f := r.Field(i)
					fi := r.Type().Field(i)

					if fi.PkgPath != "" {
						continue
					}

					name := fi.Name

					switch f.Interface().(type) {
					case string:
						if f.String() == "" {
							key = fmt.Sprintf("Empty \"%s\"", name)
						} else {
							key = fmt.Sprintf("Not Empty \"%s\"", name)
						}
					case bool:
						if !f.Bool() {
							key = fmt.Sprintf("\"%s\" is false", name)
						} else {
							key = fmt.Sprintf("\"%s\" is true", name)
						}
					case map[string]interface{}:
					case *PageTime:
						if f.IsNil() {
							key = fmt.Sprintf("\"%s\" is empty", name)
						}
					}

					if key == "" {
						continue
					}

					if _, ok := out[key]; !ok {
						out[key] = []*Page{p2}
					} else {
						out[key] = append(out[key], p2)
					}
				}
			}

			return nil
		})

	return out, nil
}