package account

import (
	"errors"

	"git.sr.ht/~sircmpwn/getopt"
	"github.com/emersion/go-imap"

	"git.sr.ht/~sircmpwn/aerc/widgets"
)

type SearchFilter struct{}

func init() {
	register(SearchFilter{})
}

func (_ SearchFilter) Aliases() []string {
	return []string{"search", "filter"}
}

func (_ SearchFilter) Complete(aerc *widgets.Aerc, args []string) []string {
	return nil
}

func (_ SearchFilter) Execute(aerc *widgets.Aerc, args []string) error {
	var (
		criteria *imap.SearchCriteria = imap.NewSearchCriteria()
	)

	opts, optind, err := getopt.Getopts(args, "ruH:")
	if err != nil {
		return err
	}
	for _, opt := range opts {
		switch opt.Option {
		case 'r':
			criteria.WithFlags = append(criteria.WithFlags, imap.SeenFlag)
		case 'u':
			criteria.WithoutFlags = append(criteria.WithoutFlags, imap.SeenFlag)
		case 'H':
			// TODO
		}
	}
	for _, arg := range args[optind:] {
		criteria.Header.Add("Subject", arg)
	}

	acct := aerc.SelectedAccount()
	if acct == nil {
		return errors.New("No account selected")
	}
	store := acct.Store()
	if store == nil {
		return errors.New("Cannot perform action. Messages still loading")
	}

	var cb func([]uint32)
	if args[0] == "filter" {
		aerc.SetStatus("Filtering...")
		cb = func(uids []uint32) {
			aerc.SetStatus("Filter complete.")
			acct.Logger().Printf("Filter results: %v", uids)
			store.ApplyFilter(uids)
		}
	} else {
		aerc.SetStatus("Searching...")
		cb = func(uids []uint32) {
			aerc.SetStatus("Search complete.")
			acct.Logger().Printf("Search results: %v", uids)
			store.ApplySearch(uids)
			// TODO: Remove when stores have multiple OnUpdate handlers
			acct.Messages().Scroll()
		}
	}
	store.Search(criteria, cb)
	return nil
}