96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
package tgapi
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import (
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"bytes"
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"context"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"time"
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"git.nix13.pw/scuroneko/laniakea/utils"
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"git.nix13.pw/scuroneko/slog"
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)
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type API struct {
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token string
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client *http.Client
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Logger *slog.Logger
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}
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func NewAPI(token string) *API {
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l := slog.CreateLogger().Level(utils.GetLoggerLevel()).Prefix("API")
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l.AddWriter(l.CreateJsonStdoutWriter())
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client := &http.Client{Timeout: time.Second * 45}
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return &API{token, client, l}
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}
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func (api *API) CloseApi() error {
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return api.Logger.Close()
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}
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type ApiResponse[R any] struct {
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Ok bool `json:"ok"`
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Description string `json:"description,omitempty"`
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Result R `json:"result,omitempty"`
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ErrorCode int `json:"error_code,omitempty"`
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}
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type TelegramRequest[R, P any] struct {
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method string
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params P
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}
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func NewRequest[R, P any](method string, params P) TelegramRequest[R, P] {
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return TelegramRequest[R, P]{method: method, params: params}
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}
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func (r TelegramRequest[R, P]) DoWithContext(ctx context.Context, api *API) (R, error) {
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var zero R
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data, err := json.Marshal(r.params)
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if err != nil {
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return zero, err
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}
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buf := bytes.NewBuffer(data)
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u := fmt.Sprintf("https://api.telegram.org/bot%s/%s", api.token, r.method)
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req, err := http.NewRequestWithContext(ctx, "POST", u, buf)
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if err != nil {
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return zero, err
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}
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req.Header.Set("Content-Type", "application/json")
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req.Header.Set("Accept", "application/json")
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req.Header.Set("User-Agent", fmt.Sprintf("Laniakea/%s", utils.VersionString))
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api.Logger.Debugln("REQ", r.method, buf.String())
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res, err := api.client.Do(req)
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if err != nil {
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return zero, err
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}
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defer res.Body.Close()
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reader := io.LimitReader(res.Body, 10<<20)
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data, err = io.ReadAll(reader)
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if err != nil {
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return zero, err
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}
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api.Logger.Debugln("RES", r.method, string(data))
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if res.StatusCode != http.StatusOK {
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return zero, fmt.Errorf("unexpected status code: %d", res.StatusCode)
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}
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var resp ApiResponse[R]
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err = json.Unmarshal(data, &resp)
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if err != nil {
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return zero, err
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}
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if !resp.Ok {
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return zero, fmt.Errorf("[%d] %s", resp.ErrorCode, resp.Description)
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}
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return resp.Result, nil
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}
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func (r TelegramRequest[R, P]) Do(api *API) (R, error) {
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ctx := context.Background()
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return r.DoWithContext(ctx, api)
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}
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