package cmd

import (
	"fmt"
	"os"

	"github.com/kb-search/kb/internal/api"
	"github.com/kb-search/kb/internal/output"
	"github.com/spf13/cobra"
)

var jobsCmd = &cobra.Command{
	Use:   "jobs [id]",
	Short: "List jobs or show job details",
	Args:  cobra.MaximumNArgs(1),
	RunE:  runJobs,
}

func init() {
	jobsCmd.Flags().String("status", "", "filter by status")
	rootCmd.AddCommand(jobsCmd)
}

func runJobs(cmd *cobra.Command, args []string) error {
	client := api.NewClient()

	if len(args) == 1 {
		// Show single job
		resp, err := client.Get("/api/v1/jobs/" + args[0])
		if err != nil {
			fmt.Fprintln(os.Stderr, err)
			os.Exit(1)
		}
		if err := api.CheckError(resp); err != nil {
			fmt.Fprintln(os.Stderr, err)
			os.Exit(1)
		}

		if output.IsJSON() {
			var raw interface{}
			if err := api.DecodeJSON(resp, &raw); err != nil {
				return fmt.Errorf("failed to decode response: %w", err)
			}
			output.PrintJSON(raw)
			return nil
		}

		var job struct {
			ID        int    `json:"id"`
			Status    string `json:"status"`
			Filename  string `json:"filename"`
			CreatedAt string `json:"created_at"`
			UpdatedAt string `json:"updated_at"`
			Error     string `json:"error"`
		}
		if err := api.DecodeJSON(resp, &job); err != nil {
			return fmt.Errorf("failed to decode response: %w", err)
		}

		pairs := [][]string{
			{"ID", fmt.Sprintf("%d", job.ID)},
			{"Status", job.Status},
			{"Filename", job.Filename},
			{"Created", job.CreatedAt},
			{"Updated", job.UpdatedAt},
		}
		if job.Error != "" {
			pairs = append(pairs, []string{"Error", job.Error})
		}
		output.PrintKeyValue(pairs)
		return nil
	}

	// List jobs
	path := "/api/v1/jobs"
	status, _ := cmd.Flags().GetString("status")
	if status != "" {
		path += "?status=" + status
	}

	resp, err := client.Get(path)
	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
	if err := api.CheckError(resp); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}

	if output.IsJSON() {
		var raw interface{}
		if err := api.DecodeJSON(resp, &raw); err != nil {
			return fmt.Errorf("failed to decode response: %w", err)
		}
		output.PrintJSON(raw)
		return nil
	}

	var jobs []struct {
		ID       int    `json:"id"`
		Status   string `json:"status"`
		Filename string `json:"filename"`
	}
	if err := api.DecodeJSON(resp, &jobs); err != nil {
		return fmt.Errorf("failed to decode response: %w", err)
	}

	if len(jobs) == 0 {
		fmt.Println("No jobs found.")
		return nil
	}

	headers := []string{"ID", "STATUS", "FILENAME"}
	var rows [][]string
	for _, j := range jobs {
		rows = append(rows, []string{fmt.Sprintf("%d", j.ID), j.Status, j.Filename})
	}
	output.PrintTable(headers, rows)
	return nil
}