package ui

import "fmt"

var (
	apexChartsHandle = templ.NewOnceHandle()
	d3Handle         = templ.NewOnceHandle()
	dexieHandle      = templ.NewOnceHandle()
	heliaHandle      = templ.NewOnceHandle()
	htmxHandle       = templ.NewOnceHandle()
	tailwindHandle   = templ.NewOnceHandle()
)

// ApexCharts is a component that renders the ApexCharts.js library
templ ApexCharts() {
	@apexChartsHandle.Once() {
		<script src="https://cdn.jsdelivr.net/npm/apexcharts"></script>
	}
}

// d3 is a component that renders the D3.js library
templ D3() {
	@d3Handle.Once() {
		<script type="module">
            import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm";
	    </script>
	}
}

// dexie is a component that renders the Dexie.js library
templ Dexie() {
	@dexieHandle.Once() {
		<script src={ jsDelivrURL("dexie", "4.0.10", "dist/dexie.min.js") }></script>
		<script src={ jsDelivrURL("dexie-export-import", "4.1.4", "dist/dexie-export-import.min.js") }></script>
	}
}

// In package deps
templ Helia() {
	@heliaHandle.Once() {
		<script src="https://unpkg.com/@helia/unixfs/dist/index.min.js"></script>
		<script src="https://unpkg.com/blockstore-core/dist/index.min.js"></script>
		<script src="https://unpkg.com/datastore-core/dist/index.min.js"></script>
		<script src="https://unpkg.com/helia/dist/index.min.js"></script>
		<script>
            // Time formatting helper
            function ms2TimeString(a) {
                const k = a % 1e3
                const s = a / 1e3 % 60 | 0
                const m = a / 6e4 % 60 | 0
                const h = a / 36e5 % 24 | 0

                return (h ? (h < 10 ? '0' + h : h) + ':' : '00:') +
                    (m < 10 ? 0 : '') + m + ':' +
                    (s < 10 ? 0 : '') + s + ':' +
                    (k < 100 ? k < 10 ? '00' : 0 : '') + k
            }

            // Log management
            const getLogLineEl = (msg) => {
                const logLine = document.createElement('span')
                logLine.innerHTML = `${ms2TimeString(performance.now())} - ${msg}`
                return logLine
            }
            
            const addToLog = (msg) => {
                const logEl = document.getElementById('runningLog')
                if (logEl) {
                    logEl.appendChild(getLogLineEl(msg))
                    logEl.appendChild(document.createElement('br'))
                }
            }

            // Peer management
            window.discoveredPeers = new Map()
            const updateConnectedPeers = () => {
                if (!window.helia || !window.helia.libp2p) return
                
                const peers = window.helia.libp2p.getPeers()
                const connectedPeerCountEl = document.getElementById('connectedPeerCount')
                const connectedPeersListEl = document.getElementById('connectedPeersList')
                
                if (connectedPeerCountEl) {
                    connectedPeerCountEl.innerHTML = peers.length
                }
                
                if (connectedPeersListEl) {
                    connectedPeersListEl.innerHTML = ''
                    
                    for (const peer of peers) {
                        const peerEl = document.createElement('li')
                        peerEl.innerText = peer.toString()
                        connectedPeersListEl.appendChild(peerEl)
                    }
                }
            }
            const updateDiscoveredPeers = () => {
                const discoveredPeerCountEl = document.getElementById('discoveredPeerCount')
                if (discoveredPeerCountEl) {
                    discoveredPeerCountEl.innerHTML = window.discoveredPeers.size
                }
            }
            // Helia node instantiation
            let heliaInstance = null
            window.instantiateHeliaNode = async () => {
                // application-specific data lives in the datastore
                const datastore = new DatastoreCore.MemoryDatastore()
                const blockstore = new BlockstoreCore.MemoryBlockstore()

                if (heliaInstance != null) {
                    return heliaInstance
                }
                heliaInstance = await Helia.createHelia({
                    datastore,
                    blockstore
                })
                addToLog('Created Helia instance')
                return heliaInstance
            }
        </script>
	}
}

// Htmx is a component that renders the Htmx.js library
templ Htmx() {
	@htmxHandle.Once() {
		<script src={ jsDelivrURL("htmx.org", "1.9.12", "dist/htmx.min.js") }></script>
		<script src={ jsDelivrURL("htmx-ext-include-vals", "2.0.0", "include-vals.min.js") }></script>
		<script src={ jsDelivrURL("htmx-ext-path-params", "2.0.0", "path-params.min.js") }></script>
		<script src={ jsDelivrURL("htmx-ext-alpine-morph", "2.0.0", "alpine-morph.min.js") }></script>
		<script src={ jsDelivrURL("htmx-ext-sse", "2.2.2", "sse.min.js") }></script>
		<script src={ jsDelivrURL("htmx-ext-ws", "2.0.2", "ws.min.js") }></script>
	}
}

// jsDelivrURL returns the URL of a package on jsDelivr
func jsDelivrURL(pkg string, version string, path string) string {
	return fmt.Sprintf("https://cdn.jsdelivr.net/npm/%s/%s/%s", pkg, version, path)
}