package automation

import (
	"context"
	"encoding/json"
	"fmt"
	"sync"

	"github.com/gochat/gochat/internal/model"
	"github.com/gochat/gochat/internal/worker"
)

type macroExecutionJob struct {
	AccountID       uint   `json:"account_id"`
	MacroID         uint   `json:"macro_id"`
	ConversationIDs []uint `json:"conversation_ids"`
	UserID          uint   `json:"user_id"`
}

var macroExecutionRegistrations sync.Map

// RegisterMacroExecutionJobs wires Chatwoot's MacrosExecutionJob equivalent.
// The job resolves account-scoped conversation display IDs at perform time.
func RegisterMacroExecutionJobs(wp *worker.WorkerPool, db DBProvider) {
	if wp == nil || db == nil {
		return
	}
	if _, loaded := macroExecutionRegistrations.LoadOrStore(wp, struct{}{}); loaded {
		return
	}
	runner := &macroExecutionJobRunner{db: db, worker: wp}
	wp.Register(TaskTypeMacroExecution, runner.perform)
}

type macroExecutionJobRunner struct {
	db     DBProvider
	worker *worker.WorkerPool
}

func (r *macroExecutionJobRunner) perform(ctx context.Context, job *model.BackgroundJob) error {
	var payload macroExecutionJob
	if err := json.Unmarshal(job.Payload, &payload); err != nil {
		return fmt.Errorf("unmarshal macro execution job: %w", err)
	}
	return NewMacroServiceWithWorker(r.db, r.worker).executeForDisplayIDsNow(ctx, payload.AccountID, payload.MacroID, payload.ConversationIDs, payload.UserID)
}