package console

import (
	"context"
	"fmt"

	"git.golem15.com/golem15/sm-sitemap-plugin/classes"
	"git.golem15.com/golem15/summercms/modules/backpack"
	"git.golem15.com/golem15/summercms/modules/bonfire"
)

// Rebuild is sitemap:rebuild [--queue]: it rebuilds the sitemap files now
// (classes.Rebuild), or with --queue dispatches the rebuild job for a
// worker. The scheduler runs it every night at 03:00.
func Rebuild(app *backpack.App) bonfire.Command {
	return bonfire.Command{
		Name:        "sitemap:rebuild",
		Description: "Rebuild the sitemap files from the content types and the additional addresses",
		Long: `Reads the published records of every content type and the additional
addresses, writes them into the sitemap's address table and numbers the
files: existing addresses keep their files, new ones are appended, and only a
changed file size renumbers. It runs in this process and ends with
"Rebuilt the sitemaps: N addresses in N files (N added, N changed, N
removed)."

--queue dispatches the rebuild job instead, for a worker to run. The
scheduler runs this command every night at 03:00; record changes and a save
of the sitemap settings queue a rebuild too.`,
		Flags: []bonfire.Flag{
			{Name: "queue", Description: "Dispatch the rebuild job for a worker instead of rebuilding here", Bare: true},
		},
		Examples: []bonfire.Example{
			{Command: "sitemap:rebuild", Description: "Rebuild the sitemap files now"},
			{Command: "sitemap:rebuild --queue", Description: "Queue a rebuild for the worker"},
		},
		Run: func(ctx context.Context, in bonfire.Input, out bonfire.Output) error {
			_, done, err := lookupDB(ctx, app)
			if err != nil {
				return err
			}
			defer done()
			if flagOn(in, "queue") {
				id, err := classes.DispatchRebuild(ctx, app)
				if err != nil {
					return err
				}
				out.Success(fmt.Sprintf("Queued the sitemap rebuild (job %d).", id))
				return nil
			}
			res, err := classes.Rebuild(ctx, app)
			if err != nil {
				return err
			}
			out.Success(fmt.Sprintf("Rebuilt the sitemaps: %d addresses in %d files (%d added, %d changed, %d removed).",
				res.Listed, res.Files, len(res.Added), len(res.Changed), len(res.Removed)))
			return nil
		},
	}
}