package cli

import (
	"encoding/json"
	"fmt"
	"net/url"
	"time"

	"github.com/spf13/cobra"

	"gitea.mynodes.xyz/ilker/llmgw/internal/control/adminapi"
)

// newMeshJobsCmd is the 3D models clients asked for, as jobs: every owner's,
// what each is doing, and a way to stop one. (ctl jobs is the control
// plane's own work, serving and updating models.)
func newMeshJobsCmd(client func() *ctlClient, asJSON *bool) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "3d",
		Short: "3D models clients asked for: the jobs, how far along each is, and stopping one",
	}
	var status string
	var limit int
	list := &cobra.Command{
		Use:   "list",
		Short: "Every owner's 3D jobs, newest first",
		Args:  cobra.NoArgs,
		RunE: func(cmd *cobra.Command, _ []string) error {
			q := url.Values{}
			if status != "" {
				q.Set("status", status)
			}
			if limit > 0 {
				q.Set("limit", fmt.Sprint(limit))
			}
			var jobs []adminapi.JobView
			if err := client().get(cmd.Context(), "/api/v1/client-jobs?"+q.Encode(), &jobs); err != nil {
				return err
			}
			if *asJSON {
				return emitJSON(jobs)
			}
			if len(jobs) == 0 {
				fmt.Fprintln(cmd.OutOrStdout(), "no 3D jobs")
				return nil
			}
			w := tabTo(cmd.OutOrStdout())
			fmt.Fprintln(w, "JOB\tMODEL\tSTATUS\tPROGRESS\tOWNER\tASKED")
			for _, j := range jobs {
				fmt.Fprintf(w, "%s\t%s\t%s\t%s\t%s\t%s ago\n", j.ID, j.Model, j.Status, progressText(j),
					j.Owner, time.Since(j.CreatedAt).Round(time.Second))
			}
			return w.Flush()
		},
	}
	list.Flags().StringVar(&status, "status", "", "only jobs in this status: queued, running, completed, failed…")
	list.Flags().IntVar(&limit, "limit", 0, "the most jobs to show (50)")
	get := &cobra.Command{
		Use:   "get JOB",
		Short: "One 3D job: its status, progress, result or error",
		Args:  cobra.ExactArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			var j adminapi.JobView
			if err := client().get(cmd.Context(), "/api/v1/client-jobs/"+url.PathEscape(args[0]), &j); err != nil {
				return err
			}
			if *asJSON {
				return emitJSON(j)
			}
			out := cmd.OutOrStdout()
			fmt.Fprintf(out, "job       %s\nmodel     %s\nstatus    %s\n", j.ID, j.Model, j.Status)
			if p := progressText(j); p != "" {
				fmt.Fprintf(out, "progress  %s\n", p)
			}
			fmt.Fprintf(out, "owner     %s (key %s)\nasked     %s\n", j.Owner, j.KeyID, j.CreatedAt.UTC().Format(time.RFC3339))
			if j.FinishedAt != nil && j.StartedAt != nil {
				fmt.Fprintf(out, "took      %s\n", j.FinishedAt.Sub(*j.StartedAt).Round(time.Second))
			}
			if j.OutputFileID != "" {
				fmt.Fprintf(out, "result    %s (%s)\n", j.OutputFileID, j.ContentType)
			}
			if j.Error != "" {
				fmt.Fprintf(out, "error     %s\n", j.Error)
			}
			return nil
		},
	}
	cancel := &cobra.Command{
		Use:   "cancel JOB",
		Short: "Stop a 3D job, in the engine's queue too",
		Args:  cobra.ExactArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			var j adminapi.JobView
			if err := client().post(cmd.Context(), "/api/v1/client-jobs/"+url.PathEscape(args[0])+"/cancel", nil, &j); err != nil {
				return err
			}
			fmt.Fprintf(cmd.OutOrStdout(), "%s is %s\n", j.ID, j.Status)
			return nil
		},
	}
	cmd.AddCommand(list, get, cancel)
	return cmd
}

// progressText is a job's progress as a person reads it.
func progressText(j adminapi.JobView) string {
	if len(j.Progress) == 0 {
		return ""
	}
	var p struct {
		State     string `json:"state"`
		Ahead     int    `json:"ahead"`
		NodeClass string `json:"node_class"`
		Step      int    `json:"step"`
		Steps     int    `json:"steps"`
		Percent   int    `json:"percent"`
	}
	if json.Unmarshal(j.Progress, &p) != nil {
		return ""
	}
	switch {
	case p.State == "queued" && p.Ahead > 0:
		return fmt.Sprintf("queued, %d ahead", p.Ahead)
	case p.State == "running" && p.Steps > 0:
		return fmt.Sprintf("running %d%%, %s step %d/%d", p.Percent, p.NodeClass, p.Step, p.Steps)
	case p.State == "running" && p.NodeClass != "":
		return "running " + p.NodeClass
	}
	return p.State
}