package testpds

import (
	"encoding/json"
	"net/http"
)

// DIDWebForURL returns the did:web identifier for a local http://host:port
// URL, percent-encoding the port colon as did:web requires. It is the DID a
// `-tags testmode` build resolves back to that URL by fetching
// http://host:port/.well-known/did.json.
func DIDWebForURL(rawURL string) string {
	return "did:web:" + didWebForHost(rawURL)
}

// HoldDIDDocumentHandler serves a minimal did:web document for a test server
// standing in for a hold: both the #atproto_pds and #atcr_hold services point
// at baseURL, and no keys are declared. Mount it at /.well-known/did.json so
// the test-mode identity directory can resolve the server's DID.
func HoldDIDDocumentHandler(did, baseURL string) http.HandlerFunc {
	doc := map[string]any{
		"@context": []string{"https://www.w3.org/ns/did/v1"},
		"id":       did,
		"service": []map[string]string{
			{"id": "#atproto_pds", "type": "AtprotoPersonalDataServer", "serviceEndpoint": baseURL},
			{"id": "#atcr_hold", "type": "AtcrHoldService", "serviceEndpoint": baseURL},
		},
	}
	return func(w http.ResponseWriter, r *http.Request) {
		w.Header().Set("Content-Type", "application/did+ld+json")
		_ = json.NewEncoder(w).Encode(doc)
	}
}