package main

import (
	"context"
	"flag"
	"fmt"
	"strings"

	svc "git.abbiamoundominio.org/hamcha/bacheca"
	proto "git.abbiamoundominio.org/hamcha/bacheca/proto"
	"git.abbiamoundominio.org/hamcha/bacheca/storage"
	boltbackend "git.abbiamoundominio.org/hamcha/bacheca/storage/bolt"
	filebackend "git.abbiamoundominio.org/hamcha/bacheca/storage/file"
)

func main() {
	format := flag.String("fmt", "rss", "Feed format (rss, atom, json)")
	dbtype := flag.String("storage.type", "bolt", "Storage backend type")
	dbfile := flag.String("storage.file", "bacheca.db", "Storage file or path, for file-based backends (bolt)")
	flag.Parse()

	ftype := strings.ToUpper(*format)
	fid, ok := proto.GetFeedRequest_FeedType_value[ftype]
	if !ok {
		panic("invalid format (-fmt), check help for supported formats")
	}

	var backend storage.Backend
	switch *dbtype {
	case "bolt":
		boltdb, err := boltbackend.MakeBoltBackend(*dbfile)
		if err != nil {
			panic(err)
		}
		defer boltdb.Close()
		backend = boltdb
	case "file":
		filebackend, err := filebackend.MakeFileBackend(*dbfile)
		if err != nil {
			panic(err)
		}
		backend = filebackend
	default:
		panic("unknown storage backend type (-storage.type), check help for supported backends")
	}

	s := svc.MakeService(backend)

	req := &proto.GetFeedRequest{
		FeedType: proto.GetFeedRequest_FeedType(fid),
	}
	rsp := &proto.GetFeedResponse{}
	err := s.GetFeed(context.Background(), req, rsp)
	if err != nil {
		panic(err)
	}

	fmt.Print(rsp.Data)
}