package gallery

import (
	"flag"
	"fmt"
	"git.gutmet.org/finstr.git"
	"git.gutmet.org/goutil.git"
	"path/filepath"
)

const Prefix string = "photos"

type Flags struct {
	single string
	clean  bool
}

func Generate(f Flags) error {
	var err error
	galleries := []string{Prefix + f.single}
	if f.single == "" {
		galleries, err = goutil.DirsWithPrefix(".", Prefix)
		if err != nil {
			return err
		}
	}
	for _, g := range galleries {
		fmt.Println("gallery: ", g)
		args := finstr.Flags{InDir: g, OutDir: filepath.Join("stage0", g), Suffix: ".md", Clean: f.clean}
		err = finstr.Generate(args)
		if err != nil {
			return err
		}
	}
	return nil
}

func Command() (goutil.CommandFlagsInit, goutil.CommandFunc) {
	f := Flags{}
	flagsInit := func(s *flag.FlagSet) {
		s.StringVar(&f.single, "single", "", "only generate single gallery instead of all (e.g. -single \"Holidays\" for folder 'photosHolidays')")
		s.BoolVar(&f.clean, "clean", false, "remove old files in galleries before generating (use with caution)")
	}
	return flagsInit, func([]string) error {
		return Generate(f)
	}
}