package cmd

import (
	"fmt"
	"log"
	"time"

	"github.com/Jaculabilis/intake/core"
	"github.com/spf13/cobra"
)

var sourceTestCmd = &cobra.Command{
	Use:   "test [flags] -- argv",
	Short: "Test a fetch action",
	Long: fmt.Sprintf(`Execute a command as if it were a feed source's fetch action.

Source-level configuration that is normally set via environment variable,
such as INTAKE_TTL, will not be applied by --env.

%s`, makeFormatHelpText()),
	Run: func(cmd *cobra.Command, args []string) {
		sourceTest(
			stringArrayArg(cmd, "env"),
			stringArg(cmd, "format"),
			stringArg(cmd, "timeout"),
			getArgv(cmd, args),
		)
	},
}

func init() {
	sourceCmd.AddCommand(sourceTestCmd)

	sourceTestCmd.Flags().StringArrayP("env", "e", nil, "Environment variables to set, in the form KEY=VAL")
	sourceTestCmd.Flags().StringP("format", "f", "headlines", "Feed format for returned items.")
	sourceTestCmd.Flags().StringP("timeout", "t", core.DefaultTimeout.String(),
		fmt.Sprintf("Timeout duration (default: %s)", core.DefaultTimeout.String()))
}

func sourceTest(env []string, format string, timeout string, cmd []string) {
	formatter := formatAs(format)

	duration, err := time.ParseDuration(timeout)
	if err != nil {
		log.Fatalf("error: invalid duration: %v", err)
	}

	items, state, _, err := core.Execute("test", cmd, env, nil, "", duration, nil)
	log.Printf("returned %d items", len(items))
	log.Printf("wrote %d bytes of state", len(state))
	if err != nil {
		log.Fatal(err)
	}
	for _, item := range items {
		fmt.Println(formatter(item))
	}
}