package cmd

import (
	"crypto/rand"
	"encoding/hex"
	"encoding/json"
	"log"

	"github.com/Jaculabilis/intake/core"
	_ "github.com/mattn/go-sqlite3"
	"github.com/spf13/cobra"
)

var itemAddCmd = &cobra.Command{
	Use:   "add",
	Short: "Add an item",
	Long: `Create an ad-hoc item in a source.

By default, the item is created in the "default" source, which is created
if it doesn't exist, with a random id.`,
	Run: func(cmd *cobra.Command, args []string) {
		itemAdd(
			stringArg(cmd, "source"),
			stringArg(cmd, "id"),
			stringArg(cmd, "title"),
			stringArg(cmd, "author"),
			stringArg(cmd, "body"),
			stringArg(cmd, "link"),
			intArg(cmd, "time"),
			stringArg(cmd, "action"),
		)
	},
}

func init() {
	itemCmd.AddCommand(itemAddCmd)

	itemAddCmd.Flags().StringP("source", "s", "", "Source in which to create the item (default: default)")
	itemAddCmd.Flags().StringP("id", "i", "", "Item id (default: random hex)")
	itemAddCmd.Flags().StringP("title", "t", "", "Item title")
	itemAddCmd.Flags().StringP("author", "a", "", "Item author")
	itemAddCmd.Flags().StringP("body", "b", "", "Item body")
	itemAddCmd.Flags().StringP("link", "l", "", "Item link")
	itemAddCmd.Flags().IntP("time", "m", 0, "Item time as a Unix timestamp")
	itemAddCmd.Flags().StringP("action", "x", "", "Item action data as JSON")
}

func itemAdd(
	source string,
	id string,
	title string,
	author string,
	body string,
	link string,
	time int,
	actions string,
) {
	// Default to "default" source
	if source == "" {
		source = "default"
	}
	// Default id to random hex string
	if id == "" {
		bytes := make([]byte, 16)
		if _, err := rand.Read(bytes); err != nil {
			log.Fatalf("error: failed to generate id: %v", err)
		}
		id = hex.EncodeToString(bytes)
	}

	var itemActions core.Actions
	if actions != "" {
		if err := json.Unmarshal([]byte(actions), &itemActions); err != nil {
			log.Fatalf("error: could not parse actions: %v", err)
		}
	}

	db := openAndMigrateDb()

	if err := core.AddItems(db, []core.Item{{
		Source: source,
		Id:     id,
		Title:  title,
		Author: author,
		Body:   body,
		Link:   link,
		Time:   time,
		Action: itemActions,
	}}); err != nil {
		log.Fatalf("error: failed to add item: %s", err)
	}

	log.Printf("Added %s/%s\n", source, id)
}