Move WissKI Parts to new ingredients system

internal/wisski/ingredient/php/php.go

@@ -0,0 +1,58 @@
+package php
+
+import (
+	"strings"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient"
+	"github.com/FAU-CDI/wisski-distillery/internal/wisski/ingredient/barrel"
+)
+
+type PHP struct {
+	ingredient.Base
+
+	Barrel *barrel.Barrel
+}
+
+// ExecScript executes the PHP code as a script on the given server.
+// When server is nil, creates a new server and automatically closes it after execution.
+// Calling this function repeatedly with server = nil is inefficient.
+//
+// The script should define a function called entrypoint, and may define additional functions.
+//
+// Code must start with "<?php" and may not contain a closing tag.
+// Code is expected not to mess with PHPs output buffer.
+// Code should not contain user input.
+// Code breaking these conventions may or may not result in an error.
+//
+// It's arguments are encoded as json using [json.Marshal] and decoded within php.
+//
+// The return value of the function is again marshaled with json and returned to the caller.
+func (php *PHP) ExecScript(server *Server, value any, code string, entrypoint string, args ...any) (err error) {
+	if server == nil {
+		server, err = php.NewServer()
+		if err != nil {
+			return
+		}
+		defer server.Close()
+	}
+
+	if code != "" {
+		if err := server.MarshalEval(nil, strings.TrimPrefix(code, "<?php")); err != nil {
+			return err
+		}
+	}
+
+	return server.MarshalCall(value, entrypoint, args...)
+}
+
+func (php *PHP) EvalCode(server *Server, value any, code string) (err error) {
+	if server == nil {
+		server, err = php.NewServer()
+		if err != nil {
+			return
+		}
+		defer server.Close()
+	}
+
+	return server.MarshalEval(value, code)
+}