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package cli

import (
	"encoding/json"
	"fmt"
	"os"

	"github.com/spf13/cobra"
	"golang.org/x/term"

	"github.com/humdrum-tiv/dots-cli/internal/render"
)

func NewTodayCmd() *cobra.Command {
	var date string
	var asJSON bool
	cmd := &cobra.Command{
		Use:   "today",
		Short: "Show the day grid",
		Args:  cobra.NoArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			client, err := RequireClient()
			if err != nil {
				return err
			}
			if date == "" {
				date = Today()
			}
			isToday := date == Today()
			d, err := client.GetDay(date, TZ())
			if err != nil {
				return err
			}
			if asJSON || !term.IsTerminal(int(os.Stdout.Fd())) {
				return json.NewEncoder(os.Stdout).Encode(map[string]any{
					"date": date, "blockSize": d.BlockSize,
					"blocks": d.Blocks, "planBlocks": d.PlanBlocks, "types": d.Types,
				})
			}
			current := -1
			if isToday {
				now := timeNow()
				current = (now.Hour()*60 + now.Minute()) / d.BlockSize
			}
			fmt.Printf("%s\n\n", date)
			fmt.Print(render.Grid(d, current))
			return nil
		},
	}
	cmd.Flags().StringVar(&date, "date", "", "day to show (YYYY-MM-DD, default today)")
	cmd.Flags().BoolVar(&asJSON, "json", false, "raw JSON output")
	return cmd
}