package web

import (
	"fmt"
	"log"
	"net/http"
	"time"

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

func (env *Env) getSource(writer http.ResponseWriter, req *http.Request) {
	source := req.PathValue("source")
	if exists, err := core.SourceExists(env.db, source); !exists || err != nil {
		http.NotFound(writer, req)
		return
	}

	page := getQueryInt(req, "page", 1)
	count := getQueryInt(req, "count", core.DefaultFeedLimit)
	showHidden := getQueryInt(req, "hidden", 0)

	var items []core.Item
	var err error
	if showHidden != 0 {
		items, err = core.GetAllItemsForSource(env.db, source, (page-1)*count, count)
	} else {
		items, err = core.GetActiveItemsForSource(env.db, source, (page-1)*count, count)
	}
	if err != nil {
		http.Error(writer, err.Error(), 500)
		return
	}

	data := html.FeedData{
		Items:      items,
		ShowHidden: showHidden,
		Page:       page,
		Count:      count,
	}
	html.Feed(writer, data)
}

func (env *Env) fetchSource(writer http.ResponseWriter, req *http.Request) {
	source := req.PathValue("source")
	if exists, err := core.SourceExists(env.db, source); !exists || err != nil {
		http.NotFound(writer, req)
		return
	}

	state, envs, argv, postProcess, err := core.GetSourceActionInputs(env.db, source, "fetch")
	if err != nil {
		http.Error(writer, fmt.Sprintf("error: failed to get data for %s: %v", source, err.Error()), 500)
		return
	}

	items, newState, errItem, err := core.Execute(source, argv, envs, state, "", time.Minute, postProcess)
	if err != nil {
		core.AddErrorItem(env.db, errItem)
		http.Error(writer, fmt.Sprintf("error: failed to execute fetch: %v", err.Error()), 500)
		return
	}

	added, deleted, err := core.UpdateWithFetchedItems(env.db, source, newState, items, time.Now())
	if err != nil {
		http.Error(writer, fmt.Sprintf("error: failed to update: %v", err.Error()), 500)
		return
	}
	log.Printf("%s added %d items, updated %d items, and deleted %d items", source, added, len(items)-added, deleted)

	data := html.FetchData{
		Source:  source,
		Added:   added,
		Updated: len(items) - added,
		Deleted: deleted,
		Items:   items,
	}
	html.Fetch(writer, data)
}