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// "a type" "needed java_imports"

nf { color: #0066bb; font-weight: bold } /* Name.Function */ .highlight .nl { color: #336699; font-style: italic } /* Name.Label */ .highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */ .highlight .py { color: #336699; font-weight: bold } /* Name.Property */ .highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */ .highlight .nv { color: #336699 } /* Name.Variable */ .highlight .ow { color: #008800 } /* Operator.Word */ .highlight .w { color: #bbbbbb } /* Text.Whitespace */ .highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

package svc // import "github.com/getwtxt/getwtxt/svc"

import (
	"bytes"
	"io/ioutil"
	"os"
	"sync"
	"time"
)

// RemoteRegistries holds a list of remote registries to
// periodically scrape for new users. The remote registries
// must have been added via POST like a user.
type RemoteRegistries struct {
	Mu   sync.RWMutex
	List []string
}

type staticAssets struct {
	mu       sync.RWMutex
	index    []byte
	indexMod time.Time
	css      []byte
	cssMod   time.Time
}

func cacheTimer() bool {
	confObj.Mu.RLock()
	answer := time.Since(confObj.LastCache) > confObj.CacheInterval
	confObj.Mu.RUnlock()

	return answer
}

// Launched by init as a coroutine to watch
// for the update intervals to pass.
func cacheAndPush() {
	for {
		if cacheTimer() {
			refreshCache()
		}
		if dbTimer() {
			err := pushDB()
			errLog("Error pushing cache to database: ", err)
		}
		time.Sleep(1000 * time.Millisecond)
	}
}

func refreshCache() {

	// This clusterfuck of mutex read locks is
	// necessary to avoid deadlock. This mess
	// also avoids a panic that would occur
	// should twtxtCache be written to during
	// this loop.
	twtxtCache.Mu.RLock()
	for k := range twtxtCache.Users {
		twtxtCache.Mu.RUnlock()
		err := twtxtCache.UpdateUser(k)
		errLog("", err)
		twtxtCache.Mu.RLock()
	}
	twtxtCache.Mu.RUnlock()

	remoteRegistries.Mu.RLock()
	for _, v := range remoteRegistries.List {
		err := twtxtCache.CrawlRemoteRegistry(v)
		errLog("Error refreshing local copy of remote registry data: ", err)
	}
	remoteRegistries.Mu.RUnlock()
	confObj.Mu.Lock()
	confObj.LastCache = time.Now()
	confObj.Mu.Unlock()
}

// pingAssets checks if the local static assets
// need to be re-cached. If they do, they are
// pulled back into memory from disk.
func pingAssets() {

	confObj.Mu.RLock()
	assetsDir := confObj.AssetsDir
	confObj.Mu.RUnlock()

	cssStat, err := os.Stat(assetsDir + "/style.css")
	errLog("", err)

	indexStat, err := os.Stat(assetsDir + "/tmpl/index.html")
	errLog("", err)

	staticCache.mu.RLock()
	indexMod := staticCache.indexMod
	cssMod := staticCache.cssMod
	staticCache.mu.RUnlock()

	if !indexMod.Equal(indexStat.ModTime()) {
		tmpls = initTemplates()

		var b []byte
		buf := bytes.NewBuffer(b)

		confObj.Mu.RLock()
		err = tmpls.ExecuteTemplate(buf, "index.html", confObj.Instance)
		confObj.Mu.RUnlock()
		errLog("", err)

		staticCache.mu.Lock()
		staticCache.index = buf.Bytes()
		staticCache.indexMod = indexStat.ModTime()
		staticCache.mu.Unlock()
	}

	if !cssMod.Equal(cssStat.ModTime()) {

		css, err := ioutil.ReadFile(assetsDir + "/style.css")
		errLog("", err)

		staticCache.mu.Lock()
		staticCache.css = css
		staticCache.cssMod = cssStat.ModTime()
		staticCache.mu.Unlock()
	}
}