package model

import (
	"testing"

	"github.com/MAX-API-Next/MAX-API/common"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/require"
)

type testSystemTaskPayload struct {
	TargetTimestamp int64 `json:"target_timestamp"`
	BatchSize       int   `json:"batch_size"`
}

type testSystemTaskState struct {
	Total     int64 `json:"total"`
	Processed int64 `json:"processed"`
	Progress  int   `json:"progress"`
	Remaining int64 `json:"remaining"`
}

func TestSystemTaskActiveKeyIsReleasedOnFinish(t *testing.T) {
	truncateTables(t)

	payload := testSystemTaskPayload{TargetTimestamp: 1000, BatchSize: 100}
	state := testSystemTaskState{}
	task, err := CreateSystemTask(SystemTaskTypeLogCleanup, SystemTaskTypeLogCleanup, payload, state)
	require.NoError(t, err)

	var decodedPayload testSystemTaskPayload
	require.NoError(t, task.DecodePayload(&decodedPayload))
	assert.Equal(t, payload, decodedPayload)

	_, err = CreateSystemTask(SystemTaskTypeLogCleanup, SystemTaskTypeLogCleanup, payload, state)
	require.Error(t, err)

	activeTask, err := GetActiveSystemTask(SystemTaskTypeLogCleanup)
	require.NoError(t, err)
	require.NotNil(t, activeTask)
	assert.Equal(t, task.TaskID, activeTask.TaskID)

	runnerID := "runner-a"
	claimedTask, claimed, err := ClaimSystemTask(task.ID, SystemTaskTypeLogCleanup, runnerID, common.GetTimestamp()+60)
	require.NoError(t, err)
	require.True(t, claimed)

	err = FinishSystemTask(claimedTask.TaskID, runnerID, SystemTaskStatusSucceeded, map[string]int64{"deleted_count": 0}, "")
	require.NoError(t, err)

	activeTask, err = GetActiveSystemTask(SystemTaskTypeLogCleanup)
	require.NoError(t, err)
	require.Nil(t, activeTask)

	_, err = CreateSystemTask(SystemTaskTypeLogCleanup, SystemTaskTypeLogCleanup, payload, state)
	require.NoError(t, err)
}

func TestSystemTaskClaimRequiresExpiredLock(t *testing.T) {
	truncateTables(t)

	payload := testSystemTaskPayload{TargetTimestamp: 1000, BatchSize: 100}
	task, err := CreateSystemTask(SystemTaskTypeLogCleanup, SystemTaskTypeLogCleanup, payload, testSystemTaskState{})
	require.NoError(t, err)

	claimedTask, claimed, err := ClaimSystemTask(task.ID, SystemTaskTypeLogCleanup, "runner-a", common.GetTimestamp()+60)
	require.NoError(t, err)
	require.True(t, claimed)

	_, claimed, err = ClaimSystemTask(task.ID, SystemTaskTypeLogCleanup, "runner-b", common.GetTimestamp()+60)
	require.NoError(t, err)
	require.False(t, claimed)

	require.NoError(t, DB.Model(claimedTask).Updates(map[string]any{
		"locked_until": common.GetTimestamp() - 1,
	}).Error)

	claimedTask, claimed, err = ClaimSystemTask(task.ID, SystemTaskTypeLogCleanup, "runner-b", common.GetTimestamp()+60)
	require.NoError(t, err)
	require.True(t, claimed)
	assert.Equal(t, "runner-b", claimedTask.LockedBy)
}
