package service

import (
	"fmt"
	"strings"
	"testing"
	"time"
)

func TestBuildStageHeartbeatProgresses(t *testing.T) {
	p1, m1 := buildStageHeartbeat("titan-13", "titan-04", 10*time.Second)
	p2, m2 := buildStageHeartbeat("titan-13", "titan-04", 3*time.Minute)
	p3, m3 := buildStageHeartbeat("titan-13", "titan-04", 11*time.Minute)

	if !(p1 > 8 && p1 < p2 && p2 < p3 && p3 <= 76) {
		t.Fatalf("unexpected build progress values: %v %v %v", p1, p2, p3)
	}
	if !strings.Contains(m1, "Scheduling") {
		t.Fatalf("expected scheduling message, got %q", m1)
	}
	if !strings.Contains(m2, "replacement image filesystem") {
		t.Fatalf("expected filesystem message, got %q", m2)
	}
	if !strings.Contains(m3, "Harbor") {
		t.Fatalf("expected Harbor message, got %q", m3)
	}
}

func TestFlashStageHeartbeatProgresses(t *testing.T) {
	p1, m1 := flashStageHeartbeat("titan-22", "registry.bstein.dev/metis/titan-13:latest", 5*time.Second)
	p2, m2 := flashStageHeartbeat("titan-22", "registry.bstein.dev/metis/titan-13:latest", 20*time.Second)
	p3, m3 := flashStageHeartbeat("titan-22", "registry.bstein.dev/metis/titan-13:latest", 90*time.Second)

	if !(p1 > 84 && p1 < p2 && p2 < p3 && p3 <= 98) {
		t.Fatalf("unexpected flash progress values: %v %v %v", p1, p2, p3)
	}
	if !strings.Contains(m1, "Pulling") {
		t.Fatalf("expected pulling message, got %q", m1)
	}
	if !strings.Contains(m2, "Writing") {
		t.Fatalf("expected writing message, got %q", m2)
	}
	if !strings.Contains(m3, "Flushing") {
		t.Fatalf("expected flushing message, got %q", m3)
	}
}

func TestParseRemoteProgressLogsFindsLatestMarker(t *testing.T) {
	logs := strings.Join([]string{
		"plain log line",
		ProgressLogLine(RemoteProgressUpdate{Stage: "build", ProgressPct: 44, Message: "extracting"}),
		ProgressLogLine(RemoteProgressUpdate{Stage: "build", ProgressPct: 72, Message: "uploading"}),
	}, "\n")

	update, ok := parseRemoteProgressLogs(logs)
	if !ok {
		t.Fatal("expected to parse remote progress logs")
	}
	if update.Stage != "build" || update.ProgressPct != 72 || update.Message != "uploading" {
		t.Fatalf("unexpected update: %#v", update)
	}
}

func TestApplyRemoteProgressUpdatesRunningJob(t *testing.T) {
	app := newTestApp(t)
	job := app.newJob("build", "titan-15", "", "")
	app.setJob(job.ID, func(j *Job) {
		j.Status = JobRunning
		j.Stage = "build"
		j.StageStartedAt = time.Now().Add(-10 * time.Second)
		j.ProgressPct = 30
	})

	app.applyRemoteProgress(job.ID, RemoteProgressUpdate{
		Stage:        "flash",
		ProgressPct:  95,
		Message:      "writing image",
		WrittenBytes: 1024,
		TotalBytes:   2048,
	})

	got := app.job(job.ID)
	if got.Stage != "flash" {
		t.Fatalf("expected stage flash, got %q", got.Stage)
	}
	if got.ProgressPct != 95 {
		t.Fatalf("expected progress 95, got %v", got.ProgressPct)
	}
	if got.Message != "writing image" {
		t.Fatalf("expected progress message to update, got %q", got.Message)
	}
	if got.Written != 1024 || got.Total != 2048 {
		t.Fatalf("expected byte counters to update, got written=%d total=%d", got.Written, got.Total)
	}
}

func TestHeartbeatRemoteJobUsesActualFlashBytes(t *testing.T) {
	app := newTestApp(t)
	job := app.newJob("replace", "titan-15", "titan-22", "/dev/sdk")
	app.setJob(job.ID, func(j *Job) {
		j.Status = JobRunning
		j.Stage = "flash"
		j.StageStartedAt = time.Now().Add(-15 * time.Second)
		j.ProgressPct = 88
		j.Written = 512
		j.Total = 1024
	})

	app.heartbeatRemoteJob(job.ID)

	got := app.job(job.ID)
	if got.ProgressPct <= 92 || got.ProgressPct > 98 {
		t.Fatalf("expected actual write progress between 92 and 98, got %v", got.ProgressPct)
	}
	expected := fmt.Sprintf("Writing %s of %s on %s", humanBytes(512), humanBytes(1024), "titan-22")
	if got.Message != expected {
		t.Fatalf("expected %q, got %q", expected, got.Message)
	}
}