package query

import (
	"fmt"
	"strings"
)

func MatchKeys(line string, entries *[]ISearchable) (*QueryObject, error) {

	var Key string = ""

	// Sanitize and assume properties for each of the keywords
	terms := []*QTerm{}
	for _, val := range strings.Split(line, " ") {

		if val == "" {
			continue
		}

		term := QTerm{
			Org:   val,
			Value: strings.Trim(val, " "),
		}
		terms = append(terms, &term)
	}

lookForKey:
	for _, term := range terms {
		for _, entry := range *entries {
			if term.Value == *entry.GetKey() {
				Key = term.Value
				term.IsKey = true
				break lookForKey
			}
		}
	}

	matches := []ISearchable{}

	if Key != "" && len(terms) == 1 {
		for _, entry := range *entries {
			if Key == *entry.GetKey() {
				matches = append(matches, entry)
			}
		}
		return &QueryObject{Key: Key, Results: &matches, SearchTerms: &terms}, nil
	} else if 0 < len(terms) {
		for _, entry := range *entries {
			anyFailed := false
			for _, term := range terms {
				if term.IsKey {
					continue
				}

				if !((Key == "" || Key == *entry.GetKey()) && entry.Test(term.Value)) {
					anyFailed = true
					break
				}
			}

			if !anyFailed {
				matches = append(matches, entry)
			}
		}
		return &QueryObject{Key: Key, Results: &matches, SearchTerms: &terms}, nil
	}

	return nil, fmt.Errorf("Cannot parse: %s", line)
}