// Copyright (c) 2026 Storm Dragon
// SPDX-License-Identifier: GPL-3.0-or-later

package tentaclewire

import (
	"encoding/json"
	"os/exec"
	"path/filepath"
	"strings"
	"testing"
)

func TestRemoteSpeechSDKValidation(t *testing.T) {
	cases := []struct {
		data  string
		valid bool
	}{
		{`{"kind":"speak","parts":[{"text":"  hello\t世界  ","characters":true,"language":"en_US"},{"end":true}]}`, true},
		{`{"kind":"cancel"}`, true},
		{`{"kind":"pause","paused":false}`, true},
		{`{"kind":"pause","paused":true}`, true},
		{`{"kind":"speak","priority":2,"parts":[{"text":"x"}]}`, true},
		{`{"kind":"speak","priority":3,"parts":[{"text":"x"}]}`, false},
		{`{"kind":"speak","priority":true,"parts":[{"text":"x"}]}`, false},
		{`{"kind":"speak","parts":[]}`, false},
		{`{"kind":"speak","parts":[{}]}`, false},
		{`{"kind":"speak","parts":[{"text":null}]}`, false},
		{`{"kind":"speak","parts":[{"text":"x","end":true}]}`, false},
		{`{"kind":"speak","parts":[{"text":"x","language":"../en"}]}`, false},
		{`{"kind":"speak","parts":[{"text":"x","voice":"peer path"}]}`, false},
		{`{"kind":"speak","parts":[{"text":"x"}],"paused":false}`, false},
		{`{"kind":"cancel","parts":null}`, false},
		{`{"kind":"cancel","parts":[{"text":"x"}]}`, false},
		{`{"kind":"cancel","paused":false}`, false},
		{`{"kind":"pause"}`, false},
		{`{"kind":"pause","paused":null}`, false},
		{`{"kind":"pause","paused":0}`, false},
		{`{"kind":"wave","path":"anything"}`, false},
		{`{"kind":"cancel","priority":null}`, false},
		{`{"kind":"cancel","extra":1}`, false},
		{`{"kind":"speak","parts":[{"text":"` + strings.Repeat("x", MaxRemoteSpeechBytes) + `"}]}`, false},
		{`{"kind":"speak","parts":[{"text":"` + strings.Repeat("<", 1100) + `"}]}`, false},
		{`{"kind":"speak","parts":[{"text":"` + strings.Repeat("\u2028", 1100) + `"}]}`, false},
	}
	var pythonCases []any
	for _, item := range cases {
		var speech RemoteSpeech
		valid := DecodeStrict([]byte(item.data), &speech) == nil && ValidRemoteSpeech(speech)
		if valid != item.valid {
			t.Fatalf("Go validation: %.100s: got %v", item.data, valid)
		}
		var value any
		if err := json.Unmarshal([]byte(item.data), &value); err != nil {
			t.Fatal(err)
		}
		pythonCases = append(pythonCases, map[string]any{"speech": value, "valid": item.valid})
	}
	path, err := filepath.Abs("../../sdk/python")
	if err != nil {
		t.Fatal(err)
	}
	script := `import json, sys
sys.path.insert(0, sys.argv[1])
from cthulhu_tentacle.session import valid_remote_speech
for case in json.load(sys.stdin):
    assert valid_remote_speech(case['speech']) == case['valid'], str(case)[:150]
`
	data, _ := json.Marshal(pythonCases)
	command := exec.Command("python3", "-B", "-c", script, path)
	command.Stdin = strings.NewReader(string(data))
	if output, err := command.CombinedOutput(); err != nil {
		t.Fatalf("Python validation: %v: %s", err, output)
	}
}

func TestRemoteSpeechEncodedBoundary(t *testing.T) {
	value := RemoteSpeech{Kind: "speak", Parts: []RemoteSpeechPart{{Text: "x"}}}
	data, _ := json.Marshal(value)
	value.Parts[0].Text = strings.Repeat("x", MaxRemoteSpeechBytes-len(data)+1)
	if !ValidRemoteSpeech(value) {
		t.Fatal("rejected exact bound")
	}
	value.Parts[0].Text += "x"
	if ValidRemoteSpeech(value) {
		t.Fatal("accepted above bound")
	}
	value.Parts[0].Text = string([]byte{0xff})
	if ValidRemoteSpeech(value) {
		t.Fatal("accepted invalid UTF-8")
	}
}

func TestRemoteSpeechPresentationSDKValidation(t *testing.T) {
	base := `"lease":"` + strings.Repeat("a", 32) + `","epoch":1,"sequence":3,"speech":{"kind":"speak","parts":[{"text":"x"}]}`
	cases := []struct {
		fields string
		valid  bool
	}{
		{"", true},
		{`,"utterance":3`, true},
		{`,"utterance":1,"final":true`, true},
		{`,"utterance":0,"final":false`, true},
		{`,"utterance":4`, false},
		{`,"utterance":-1`, false},
		{`,"utterance":true`, false},
		{`,"utterance":null`, false},
		{`,"utterance":18446744073709551616`, false},
		{`,"final":true`, false},
		{`,"utterance":1,"final":1`, false},
		{`,"utterance":1,"final":null`, false},
		{`,"extra":1`, false},
	}
	var pythonCases []any
	for _, item := range cases {
		data := []byte(`{` + base + item.fields + `}`)
		var request RemotePresentation
		if valid := DecodeStrict(data, &request) == nil && ValidRemotePresentation(request); valid != item.valid {
			t.Fatalf("Go presentation validation: %s: got %v", item.fields, valid)
		}
		// Use RawMessage when encoding the cases for Python, preserving uint64
		// boundaries rather than passing them through float64.
		pythonCases = append(pythonCases, map[string]any{"request": json.RawMessage(data), "valid": item.valid})
	}
	for _, kind := range []string{"cancel", "pause"} {
		request := RemotePresentation{RemoteOperation: RemoteOperation{Lease: strings.Repeat("a", 32), Epoch: 1, Sequence: 1}, Utterance: 1, Speech: RemoteSpeech{Kind: kind}}
		if kind == "pause" {
			paused := true
			request.Speech.Paused = &paused
		}
		if ValidRemotePresentation(request) {
			t.Fatal("grouped non-speak effect")
		}
		pythonCases = append(pythonCases, map[string]any{"request": request, "valid": false})
	}
	path, err := filepath.Abs("../../sdk/python")
	if err != nil {
		t.Fatal(err)
	}
	script := `import json, sys
sys.path.insert(0, sys.argv[1])
from cthulhu_tentacle.session import valid_remote_presentation
for case in json.load(sys.stdin):
    assert valid_remote_presentation(case['request']) == case['valid'], str(case)[:180]
`
	data, _ := json.Marshal(pythonCases)
	command := exec.Command("python3", "-B", "-c", script, path)
	command.Stdin = strings.NewReader(string(data))
	if output, err := command.CombinedOutput(); err != nil {
		t.Fatalf("Python presentation validation: %v: %s", err, output)
	}
}