package web

import (
	"encoding/json"
	"net/http"
	"time"

	"github.com/Jaculabilis/intake/core"
	"github.com/Jaculabilis/intake/web/html"
)

func (env *Env) getItem(writer http.ResponseWriter, req *http.Request) {
	source := req.PathValue("source")
	id := req.PathValue("id")

	item, err := core.GetItem(env.db, source, id)
	if err != nil {
		writer.Write([]byte(err.Error()))
		return
	}
	html.Item(writer, html.ItemData{Item: item})
}

func (env *Env) deleteItem(writer http.ResponseWriter, req *http.Request) {
	source := req.PathValue("source")
	id := req.PathValue("id")

	_, err := core.DeactivateItem(env.db, source, id)
	if err != nil {
		writer.Write([]byte(err.Error()))
		return
	}
	item, err := core.GetItem(env.db, source, id)
	if err != nil {
		writer.Write([]byte(err.Error()))
		return
	}
	html.Item(writer, html.ItemData{Item: item})
}

func (env *Env) doAction(writer http.ResponseWriter, req *http.Request) {
	source := req.PathValue("source")
	id := req.PathValue("id")
	action := req.PathValue("action")

	item, err := core.GetItem(env.db, source, id)
	if err != nil {
		http.Error(writer, err.Error(), 500)
		return
	}

	if item.Action[action] == nil {
		http.Error(writer, "no such action", 500)
		return
	}

	argv, err := core.GetArgvForAction(env.db, source, action)
	if err != nil {
		http.Error(writer, err.Error(), 500)
		return
	}

	itemJson, err := json.Marshal(item)
	if err != nil {
		http.Error(writer, err.Error(), 500)
		return
	}

	res, err := core.Execute(source, argv, nil, string(itemJson), time.Minute)
	if err != nil {
		http.Error(writer, err.Error(), 500)
		return
	}
	if len(res) != 1 {
		http.Error(writer, "not exactly one item", 500)
		return
	}
	newItem := res[0]
	core.BackfillItem(&newItem, &item)

	if err = core.UpdateItems(env.db, []core.Item{newItem}); err != nil {
		http.Error(writer, err.Error(), 500)
		return
	}

	html.Item(writer, html.ItemData{Item: newItem})
}