package campaign

import (
	"fmt"
	"os"

	"gitea.reground.org/will/eec-campaigns/internal/listmonk"
)

// SyncTemplate pushes a template file's content into listmonk under name,
// creating it (as the default campaign template) if missing or overwriting
// its body if it already exists. Unlike campaign sync, a template has no
// send-lifecycle status to protect — there's no "draft vs. live" distinction
// to guard, so this is always a safe create-or-update, no rejection path.
func SyncTemplate(lm *listmonk.Client, name, path string) (*listmonk.Template, error) {
	body, err := os.ReadFile(path)
	if err != nil {
		return nil, err
	}

	existing, err := lm.FindTemplateByName(name)
	if err != nil {
		return nil, err
	}
	if existing == nil {
		created, err := lm.CreateTemplate(name, string(body), true)
		if err != nil {
			return nil, fmt.Errorf("creating template %q: %w", name, err)
		}
		return created, nil
	}
	if err := lm.UpdateTemplate(existing.ID, name, string(body), true); err != nil {
		return nil, fmt.Errorf("updating template %q: %w", name, err)
	}
	existing.Body = string(body)
	existing.IsDefault = true
	return existing, nil
}