107 lines
2.7 KiB
Go
107 lines
2.7 KiB
Go
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// Package ledger provides a client for aamos-ledger integration.
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// One proxy method, not six copies. Linus-style.
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package ledger
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import (
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"context"
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"encoding/json"
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"fmt"
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"net/http"
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"os"
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"time"
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)
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var baseURL = getEnv("LEDGER_URL", "http://localhost:3250")
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func getEnv(key, fallback string) string {
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if v := os.Getenv(key); v != "" {
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return v
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}
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return fallback
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}
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// Client handles communication with aamos-ledger
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type Client struct {
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baseURL string
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client *http.Client
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}
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// NewClient creates a new ledger client
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func NewClient() *Client {
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return &Client{
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baseURL: baseURL,
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client: &http.Client{Timeout: 10 * time.Second},
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}
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}
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// Get proxies a GET request to the ledger and returns the JSON response.
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// This replaces 6 identical methods with one.
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func (c *Client) Get(ctx context.Context, path string) (map[string]interface{}, error) {
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, c.baseURL+path, nil)
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if err != nil {
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return nil, fmt.Errorf("create request: %w", err)
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}
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resp, err := c.client.Do(req)
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if err != nil {
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return nil, fmt.Errorf("ledger unavailable: %w", err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("ledger error: status %d", resp.StatusCode)
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}
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var result map[string]interface{}
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if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
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return nil, fmt.Errorf("decode error: %w", err)
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}
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return result, nil
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}
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// Handler wraps the client for HTTP handlers
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type Handler struct {
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client *Client
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}
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// NewHandler creates a new ledger HTTP handler
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func NewHandler() *Handler {
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return &Handler{client: NewClient()}
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}
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// Proxy handles any ledger endpoint with a single method
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func (h *Handler) Proxy(w http.ResponseWriter, r *http.Request, ledgerPath string) {
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result, err := h.client.Get(r.Context(), ledgerPath)
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if err != nil {
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w.Header().Set("Content-Type", "application/json")
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w.WriteHeader(http.StatusServiceUnavailable)
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json.NewEncoder(w).Encode(map[string]string{"error": err.Error()})
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return
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}
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w.Header().Set("Content-Type", "application/json")
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json.NewEncoder(w).Encode(result)
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}
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// Convenience methods that use Proxy internally
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func (h *Handler) GetBalanceSheet(w http.ResponseWriter, r *http.Request) {
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h.Proxy(w, r, "/api/ledger/reports/balance")
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}
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func (h *Handler) GetIncomeStatement(w http.ResponseWriter, r *http.Request) {
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h.Proxy(w, r, "/api/ledger/reports/income")
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}
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func (h *Handler) GetMomsReport(w http.ResponseWriter, r *http.Request) {
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h.Proxy(w, r, "/api/ledger/tax/moms")
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}
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func (h *Handler) GetAccounts(w http.ResponseWriter, r *http.Request) {
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h.Proxy(w, r, "/api/ledger/accounts")
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}
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func (h *Handler) GetInvoices(w http.ResponseWriter, r *http.Request) {
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h.Proxy(w, r, "/api/ledger/invoices")
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}
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