package platform

import (
	"context"
	"os"
	"os/exec"
	"path/filepath"
	"testing"
)

func TestStreamExecOutputWritesLiveFileIncrementally(t *testing.T) {
	dir := t.TempDir()
	livePath := filepath.Join(dir, "job.log")

	cmd := satExecCommand("printf", "line1\nline2\n")
	out, err := streamExecOutput(cmd, nil, livePath)
	if err != nil {
		t.Fatalf("streamExecOutput error: %v", err)
	}
	if string(out) != "line1\nline2\n" {
		t.Fatalf("out=%q want %q", out, "line1\nline2\n")
	}
	got, err := os.ReadFile(livePath)
	if err != nil {
		t.Fatalf("ReadFile(livePath): %v", err)
	}
	if string(got) != "line1\nline2\n" {
		t.Fatalf("livePath content=%q want %q", got, "line1\nline2\n")
	}
}

func TestStreamExecOutputSkipsLiveFileWhenPathEmpty(t *testing.T) {
	cmd := satExecCommand("printf", "line1\n")
	out, err := streamExecOutput(cmd, nil, "")
	if err != nil {
		t.Fatalf("streamExecOutput error: %v", err)
	}
	if string(out) != "line1\n" {
		t.Fatalf("out=%q want %q", out, "line1\n")
	}
}

func TestRunSATCommandCtxWritesLivePath(t *testing.T) {
	dir := t.TempDir()
	verboseLog := filepath.Join(dir, "verbose.log")
	livePath := filepath.Join(dir, "job.log")

	oldExecCommand := satExecCommand
	satExecCommand = func(name string, args ...string) *exec.Cmd {
		return exec.Command(name, args...)
	}
	t.Cleanup(func() { satExecCommand = oldExecCommand })

	out, err := runSATCommandCtx(context.Background(), verboseLog, "job", []string{"printf", "hello\n"}, nil, nil, livePath)
	if err != nil {
		t.Fatalf("runSATCommandCtx error: %v", err)
	}
	if string(out) != "hello\n" {
		t.Fatalf("out=%q want %q", out, "hello\n")
	}
	got, err := os.ReadFile(livePath)
	if err != nil {
		t.Fatalf("ReadFile(livePath): %v", err)
	}
	if string(got) != "hello\n" {
		t.Fatalf("livePath content=%q want %q", got, "hello\n")
	}
}

func TestRunAcceptancePackCtxInvokesJobBoundaryHook(t *testing.T) {
	old := satJobBoundaryHook
	t.Cleanup(func() { satJobBoundaryHook = old })

	var seen []string
	SetJobBoundaryHook(func(jobName string) {
		seen = append(seen, jobName)
	})

	oldExecCommand := satExecCommand
	satExecCommand = func(name string, args ...string) *exec.Cmd {
		return exec.Command(name, args...)
	}
	t.Cleanup(func() { satExecCommand = oldExecCommand })

	dir := t.TempDir()
	_, err := runAcceptancePackCtx(context.Background(), dir, "test-pack", []satJob{
		{name: "01-a.log", cmd: []string{"printf", "a\n"}},
		{name: "02-b.log", cmd: []string{"printf", "b\n"}},
	}, nil)
	if err != nil {
		t.Fatalf("runAcceptancePackCtx error: %v", err)
	}

	if len(seen) != 2 || seen[0] != "01-a.log" || seen[1] != "02-b.log" {
		t.Fatalf("seen=%v want [01-a.log 02-b.log]", seen)
	}
}