package banking

import (
	"bytes"
	"context"
	"encoding/json"
	"fmt"
	"net/http"
	"time"
)

// BankingClient provides access to backend banking services
type BankingClient struct {
	baseURL    string
	httpClient *http.Client
}

// NewBankingClient creates a new banking client
func NewBankingClient(baseURL string) *BankingClient {
	return &BankingClient{
		baseURL: baseURL,
		httpClient: &http.Client{
			Timeout: 10 * time.Second,
		},
	}
}

// GetAccountStatus gets account status from banking service
func (c *BankingClient) GetAccountStatus(ctx context.Context, accountID string) (map[string]interface{}, error) {
	url := fmt.Sprintf("%s/api/v1/banking/accounts/%s", c.baseURL, accountID)

	req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
	if err != nil {
		return nil, err
	}

	resp, err := c.httpClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusOK {
		return nil, fmt.Errorf("unexpected status: %d", resp.StatusCode)
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		return nil, err
	}

	return result, nil
}

// CreateTicket creates a support ticket
func (c *BankingClient) CreateTicket(ctx context.Context, subject, details string) (map[string]interface{}, error) {
	url := fmt.Sprintf("%s/api/v1/banking/tickets", c.baseURL)

	payload := map[string]string{
		"subject": subject,
		"details": details,
	}

	jsonData, err := json.Marshal(payload)
	if err != nil {
		return nil, err
	}

	req, err := http.NewRequestWithContext(ctx, "POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		return nil, err
	}
	req.Header.Set("Content-Type", "application/json")

	resp, err := c.httpClient.Do(req)
	if err != nil {
		return nil, err
	}
	defer resp.Body.Close()

	if resp.StatusCode != http.StatusCreated {
		return nil, fmt.Errorf("unexpected status: %d", resp.StatusCode)
	}

	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		return nil, err
	}

	return result, nil
}