package cmd

import (
	"errors"
	"github.com/spf13/cobra"
	"github.com/spf13/viper"
	"io/ioutil"
	"math"
	"os"
	"paste.ee/go"
	"path"
)

// uploadCommandHandler handles the root command from Cobra
// The program takes two inputs, an arg list (files), or stdin.
// If args is empty, stdin will be used.
func uploadCommandHandler(cmd *cobra.Command, args []string) {
	client := pastee.New(viper.GetString("apiKey"))

	paste := &pastee.Paste{
		Encrypted: viper.GetBool("encrypt"),
	}

	if len(args) > 0 && args[0] != "-" {
		paste.Sections = make([]*pastee.Section, int(math.Min(float64(len(args)), 10)))

		// File list
		for i, filePath := range args {
			if i >= 10 {
				break
			}

			bytes, err := ioutil.ReadFile(filePath)

			if err != nil {
				cmd.PrintErrln("Unable to read file:", err)
				os.Exit(1)
			}

			paste.Sections[i] = &pastee.Section{
				Name:     path.Base(filePath),
				Contents: string(bytes),
			}
		}
	} else {
		// Stdin
		stdinContents, err := ioutil.ReadAll(os.Stdin)

		if err != nil {
			cmd.PrintErrln("Error reading from stdin:", err)
			os.Exit(1)
		}

		paste.Sections = []*pastee.Section{
			{Contents: string(stdinContents)},
		}
	}

	res, err := client.Submit(paste)

	if err != nil || res.Link == "" {
		if err == nil {
			err = errors.New("unknown error")
		}

		cmd.PrintErrln("Unable to upload paste:", err)
		os.Exit(1)
	}

	link := res.Link

	if res.Key != "" {
		link += "#" + res.Key
	}

	cmd.Println(link)
}