package util

import (
	"context"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/bson/primitive"
	"go.mongodb.org/mongo-driver/mongo"
	"log"
	"time"
)

var Client *mongo.Client

func GetDebtsForPerson(client *mongo.Client, personID string) ([]Debt, error) {
	var results []Debt

	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	// Umwandlung der personID von string in primitive.ObjectID
	objID, err := primitive.ObjectIDFromHex(personID)
	if err != nil {
		return nil, err
	}

	// Verbindung zur "debts" Sammlung
	debtsCollection := client.Database("debtlist").Collection("debts")

	// Abfrage erstellen, die alle Schulden findet, deren fk_pid mit der personID übereinstimmt
	filter := bson.M{"fk_pid": objID}
	cursor, err := debtsCollection.Find(ctx, filter)
	if err != nil {
		return nil, err
	}
	defer cursor.Close(ctx)

	// Durchlaufen des Cursors und Hinzufügen der Ergebnisse zur results-Slice
	for cursor.Next(ctx) {
		var debt Debt
		if err := cursor.Decode(&debt); err != nil {
			return nil, err
		}
		results = append(results, debt)
	}

	if err := cursor.Err(); err != nil {
		return nil, err
	}

	return results, nil
}
func InsertRandomData(client *mongo.Client) {
	persons := []string{"Max", "Moritz", "Hans", "Peter", "Paul", "Klaus", "Karl", "Kai", "Kurt", "Karl-Heinz"}
	debts := []Debt{}
	for i := 0; i < 10; i++ {
		person := Person{Name: persons[i]}
		collection := client.Database("debtlist").Collection("persons")
		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
		defer cancel()
		result, err := collection.InsertOne(ctx, person)
		if err != nil {
			log.Fatal(err)
		}
		for j := 0; j < 3; j++ {
			debts = append(debts, Debt{PersonID: result.InsertedID.(primitive.ObjectID), Amount: j * 100, Description: "Test", Datetime: time.Now()})
		}
	}
	collection := client.Database("debtlist").Collection("debts")
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	for _, debt := range debts {
		_, err := collection.InsertOne(ctx, debt)
		if err != nil {
			log.Fatal(err)
		}
	}
}