package view

import (
	"context"
	"encoding/json"
	"local/dndex/storage"
	"local/dndex/storage/entity"
	"log"
	"net/http"
	"path"
	"strings"
)

func httpwho(g storage.Graph, w http.ResponseWriter, r *http.Request) error {
	namespace := strings.TrimLeft(r.URL.Path, path.Dir(r.URL.Path))
	if len(namespace) == 0 {
		http.NotFound(w, r)
		return nil
	}
	ids := r.URL.Query()["id"]
	_, verbose := r.URL.Query()["v"]
	_, one := r.URL.Query()["one"]
	results := make(map[string]entity.One)
	for i := 0; i < len(ids); i++ {
		id := ids[i]
		one, err := httpwhoOne(r.Context(), g, namespace, id, verbose)
		if err != nil {
			return err
		}
		results[id] = one
	}
	var marshalme interface{}
	if one {
		for k := range results {
			marshalme = results[k]
			break
		}
	} else {
		marshalme = results
	}
	log.Printf("id=%+v, one=%v, verbose=%v, results:%+v", ids, one, verbose, marshalme)
	enc := json.NewEncoder(w)
	enc.SetIndent("", "   ")
	return enc.Encode(marshalme)
}

func httpwhoOne(ctx context.Context, g storage.Graph, namespace, id string, verbose bool) (entity.One, error) {
	ones, err := g.List(ctx, namespace, id)
	if err != nil {
		return entity.One{}, err
	}
	if len(ones) != 1 {
		ones = append(ones, entity.One{})
	}
	one := ones[0]
	if verbose {
		ones, err := g.List(ctx, namespace, one.Peers()...)
		if err != nil {
			return entity.One{}, err
		}
		for _, another := range ones {
			another.Connections = nil
			another.Text = ""
			for j := range one.Connections {
				if one.Connections[j].Name == another.Name {
					another.Relationship = one.Connections[j].Relationship
					one.Connections[j] = another
				}
			}
		}
	}
	return one, nil
}