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

package app

import (
	"context"
	"os"
	"os/exec"
	"path/filepath"
	"strings"
	"testing"
	"time"

	"git.stormux.org/storm/fenrir/internal/control"
	"git.stormux.org/storm/fenrir/internal/interaction"
)

func TestApplicationAliasesShellCheck(t *testing.T) {
	path, err := exec.LookPath("shellcheck")
	if err != nil {
		t.Skip("shellcheck unavailable")
	}
	for _, id := range []string{"networkmanager", "ninjam", "rogue", "codex"} {
		process := exec.Command(path, "-s", "bash", "-")
		process.Stdin = strings.NewReader(application_alias(id, "") + "\n")
		if output, err := process.CombinedOutput(); err != nil {
			t.Fatalf("%s: %v: %s", id, err, output)
		}
	}
}

func TestApplicationAliasThroughPrivateSocket(t *testing.T) {
	socatPath, err := exec.LookPath("socat")
	if err != nil {
		t.Skip("socat unavailable")
	}
	directory := t.TempDir()
	socketPath := filepath.Join(directory, "reader.sock")
	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
	defer cancel()
	server, err := control.Open(ctx, control.Options{SocketFile: socketPath, RegistryDirectory: directory})
	if err != nil {
		t.Fatal(err)
	}
	defer server.Close()
	if err := os.Symlink(socatPath, filepath.Join(directory, "socat")); err != nil {
		t.Fatal(err)
	}
	if err := os.WriteFile(filepath.Join(directory, "cninjam"), []byte("#!/bin/sh\necho application-launched\n"), 0700); err != nil {
		t.Fatal(err)
	}
	a, _ := persistence_application(t, true)
	override_read(t, a, override_screen(1, "[Username@host directory] $"))
	process := exec.CommandContext(ctx, "/bin/bash", "--noprofile", "--norc", "-c", "shopt -s expand_aliases\n"+application_alias("ninjam", socketPath)+"\ncninjam\n")
	process.Env = append(os.Environ(), "PATH="+directory)
	completed := make(chan struct{})
	var output []byte
	var processError error
	go func() {
		output, processError = process.CombinedOutput()
		close(completed)
	}()
	select {
	case request := <-server.Requests():
		if request.Text != "command application ninjam" {
			t.Fatal(request.Text)
		}
		a.remote_request(request)
	case <-ctx.Done():
		t.Fatal("alias did not send selection request")
	}
	<-completed
	if processError != nil || string(output) != "application-launched\n" || a.overrides[1] == nil {
		t.Fatalf("launch failed: %v, %s", processError, output)
	}
	override_read(t, a, override_screen(1, "ninjam"))
	if a.overrideCurrent == nil || a.overrideCurrent.id != "ninjam" {
		t.Fatal("pre-launch selection did not activate when application appeared")
	}
}

func TestApplicationAliasLaunchesWithArgumentsDespiteReaderFailure(t *testing.T) {
	for _, scenario := range []string{"success", "rejected", "failed", "missing"} {
		t.Run(scenario, func(t *testing.T) {
			directory := t.TempDir()
			requestPath := filepath.Join(directory, "request")
			argsPath := filepath.Join(directory, "args")
			program := "#!/bin/sh\nprintf '%s\\n' \"$@\" > \"$ALIAS_ARGS\"\nexit 7\n"
			if err := os.WriteFile(filepath.Join(directory, "cninjam"), []byte(program), 0700); err != nil {
				t.Fatal(err)
			}
			if scenario != "missing" {
				client := "#!/bin/sh\nprintf '%s\\n' \"$@\" > \"$ALIAS_REQUEST\"\n/bin/cat >> \"$ALIAS_REQUEST\"\n"
				if scenario == "rejected" {
					client += "echo 'Command remote control is disabled'\n"
				}
				if scenario == "failed" {
					client += "exit 1\n"
				}
				if err := os.WriteFile(filepath.Join(directory, "socat"), []byte(client), 0700); err != nil {
					t.Fatal(err)
				}
			}
			socketPath := "/tmp/example socket'$(false).sock"
			script := "set -euo pipefail\nshopt -s expand_aliases\n" + application_alias("ninjam", socketPath) + "\ncninjam 'argument with spaces' '*.wav'\n"
			process := exec.Command("/bin/bash", "--noprofile", "--norc", "-c", script)
			process.Env = append(os.Environ(), "PATH="+directory, "ALIAS_ARGS="+argsPath, "ALIAS_REQUEST="+requestPath)
			output, err := process.CombinedOutput()
			if failure, ok := err.(*exec.ExitError); !ok || failure.ExitCode() != 7 {
				t.Fatalf("application status lost: %v, %s", err, output)
			}
			args, err := os.ReadFile(argsPath)
			if err != nil || string(args) != "argument with spaces\n*.wav\n" {
				t.Fatal("arguments lost", string(args), err)
			}
			if scenario != "missing" {
				request, err := os.ReadFile(requestPath)
				if err != nil || string(request) != "-T\n2\n-\nUNIX-CLIENT:"+socketPath+"\ncommand application ninjam\n" {
					t.Fatal("socket or request changed by shell", string(request), err)
				}
			}
			if scenario == "rejected" && !strings.Contains(string(output), "Command remote control is disabled") {
				t.Fatal("reader error hidden", string(output))
			}
		})
	}
}

func TestApplicationsMenuCopiesAliasWithoutSelecting(t *testing.T) {
	a, voice := persistence_application(t, true)
	override_read(t, a, override_screen(1, "ninjam"))
	a.open_applications()
	a.ui.handle(interaction.Key{Name: "tab"})
	a.ui.handle(interaction.Key{Name: "enter"})
	if got := voice.messages[len(voice.messages)-1]; got != "Default has no application alias" {
		t.Fatal(got)
	}
	a.ui.handle(interaction.Key{Name: "tab", Shift: true})
	// Use the list's prefix search, then Tab to the copy button.
	a.ui.handle(interaction.Key{Text: "n"})
	a.ui.handle(interaction.Key{Text: "i"})
	a.ui.handle(interaction.Key{Name: "tab"})
	a.ui.handle(interaction.Key{Name: "enter"})
	if !a.ui.active || len(a.overrides) != 0 {
		t.Fatal("copy closed menu or selected an override")
	}
	text, ok := a.clipboards.history.Current()
	if !ok || text != application_alias("ninjam", "") {
		t.Fatal("wrong clipboard contents", text)
	}
	a.ui.handle(interaction.Key{Name: "escape"})
}