110 lines
2.2 KiB
Go
110 lines
2.2 KiB
Go
package standard
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import (
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"fmt"
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"io"
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"maps"
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"net/http"
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"strings"
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"reichard.io/poiesis/internal/runtime/pkg/builtin"
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)
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type FetchArgs struct {
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Input string `json:"input"`
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Init *FetchOptions `json:"init,omitempty"`
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}
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type FetchOptions struct {
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Method string `json:"method,omitempty"`
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Headers map[string]string `json:"headers,omitempty"`
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Body *string `json:"body,omitempty"`
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}
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func (o *FetchOptions) Defaults() *FetchOptions {
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if o.Method == "" {
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o.Method = "GET"
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}
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return o
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}
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type FetchResult struct {
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OK bool `json:"ok"`
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Status int `json:"status"`
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Body string `json:"body"`
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Headers map[string]string `json:"headers"`
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}
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type AddArgs struct {
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A int `json:"a"`
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B int `json:"b"`
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}
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type GreetArgs struct {
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Name string `json:"name"`
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}
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func Fetch(args FetchArgs) (*FetchResult, error) {
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method := "GET"
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headers := make(map[string]string)
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if args.Init != nil {
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method = args.Init.Method
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if args.Init.Headers != nil {
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maps.Copy(headers, args.Init.Headers)
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}
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}
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req, err := http.NewRequest(method, args.Input, nil)
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if err != nil {
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return nil, fmt.Errorf("failed to create request: %w", err)
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}
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for k, v := range headers {
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req.Header.Set(k, v)
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}
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resp, err := http.DefaultClient.Do(req)
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if err != nil {
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return nil, fmt.Errorf("failed to fetch: %w", err)
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}
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defer func() {
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_ = resp.Body.Close()
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}()
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("failed to read body: %w", err)
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}
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resultHeaders := make(map[string]string)
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for key, values := range resp.Header {
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if len(values) > 0 {
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val := values[0]
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resultHeaders[key] = val
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resultHeaders[strings.ToLower(key)] = val
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}
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}
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return &FetchResult{
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OK: resp.StatusCode >= 200 && resp.StatusCode < 300,
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Status: resp.StatusCode,
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Body: string(body),
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Headers: resultHeaders,
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}, nil
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}
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func add(args AddArgs) int {
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return args.A + args.B
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}
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func greet(args GreetArgs) string {
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return fmt.Sprintf("Hello, %s!", args.Name)
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}
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func init() {
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builtin.RegisterBuiltin[FetchArgs, *FetchResult]("fetch", Fetch, builtin.WithPromise())
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builtin.RegisterBuiltin[AddArgs, int]("add", add)
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builtin.RegisterBuiltin[GreetArgs, string]("greet", greet)
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}
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