package pkg

import (
	"log"
	"code.gitea.io/sdk/gitea"
	nomad "github.com/hashicorp/nomad/api"
)

type Job struct {
	Cluster *Cluster
	Config *Config
	Notification *GiteaNotification
	Dispatch *nomad.JobDispatchResponse
	Creds *SecretGitea
	Flavor string
}

func (j *Job) follow() {
	notifInfo := notifSummary(j.Notification)

	log.Printf("[lifecycle] Commit to build: %s, Gitea URL: %s\n", notifInfo, j.Creds.Url)
	// init Gitea
	forge, err := gitea.NewClient(j.Creds.Url, gitea.SetToken(j.Creds.Token))
	if err != nil {
		log.Printf("Unable to create gitea client for %s: %+v\n", notifInfo, err)
		return
	}

	// get job's deployment
	jobs := j.Cluster.Nomad.Jobs()
	queryOpt := nomad.QueryOptions{
		AllowStale: false,
	}

	safeguard := 1000
	for ; safeguard > 0; safeguard-- {
		// Blocking fetch on deployment info
		job, meta, err := jobs.Summary(j.Dispatch.DispatchedJobID, &queryOpt)
		if err != nil {
			log.Printf("[lifecycle] can't fetch job for %s: %+v\n", notifInfo, err)
			break
		}
		queryOpt.WaitIndex = meta.LastIndex

		summary, ok := job.Summary["runner"]
		if !ok {
			log.Printf("[lifecycle] Job %s for %s must contain a 'runner' task\n", job.JobID, notifInfo)
			break
		}
		log.Printf("[lifecycle] Task status for job %s on %s: %+v\n", job.JobID, notifInfo, summary)

		// Compute new job state
		state := nomadToGiteaStatus(&summary)

		// Try updating Gitea commit status
		_, _, err = forge.CreateStatus(
			j.Notification.Repository.Owner.Username,
			j.Notification.Repository.Name,
			j.Notification.After,
			gitea.CreateStatusOption{
				State:       state,
				TargetURL:   j.Config.AlbatrosURL + "/build?log=stderr&job=" + j.Dispatch.DispatchedJobID,
				Description: j.Flavor,
				Context:     "Albatros",
			})

		if err != nil {
			log.Printf("[lifecycle] can't update gitea repo %s for job %s: %+v\n", notifInfo, job.JobID, err)
		}

		// Continue the loop only if the job is pending
		if state != gitea.StatusPending {
			log.Printf("Job %s for %s terminated with status %s\n", job.JobID, notifInfo, state)
			break
		}
	}

	if safeguard == 0 {
		// To avoid dangerous infinite loops, we put an upperbound here
		// of 1k refresh here. Reaching this limit will allow us to know
		// that something did not work as expected...
		log.Printf("!!! [lifecycle] we refreshed 1k times the job of %s and it's still running, giving up...\n", notifInfo)
	}
}