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Merged
codeunia-dev merged 1 commit into from
Nov 1, 2025
Merged

feat(newsletter): Add comprehensive newsletter management system #255

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271 changes: 271 additions & 0 deletions app/admin/newsletter/page.tsx
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Original file line number Diff line number Diff line change
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"use client"

import { useEffect, useState } from "react"
import { Button } from "@/components/ui/button"
import { Input } from "@/components/ui/input"
import { Download, Send, Loader2, Users, Mail } from "lucide-react"
import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs"

interface Subscriber {
id: number
email: string
status: string
created_at: string
}

export default function NewsletterAdminPage() {
const [subscribers, setSubscribers] = useState<Subscriber[]>([])
const [loading, setLoading] = useState(true)
const [stats, setStats] = useState({ total: 0, subscribed: 0, unsubscribed: 0 })
const [error, setError] = useState("")

// Newsletter sending state
const [subject, setSubject] = useState("")
const [content, setContent] = useState("")
const [sending, setSending] = useState(false)

useEffect(() => {
fetchSubscribers()
}, [])

const fetchSubscribers = async () => {
try {
const response = await fetch("/api/admin/newsletter/subscribers")
const data = await response.json()

if (response.ok) {
setSubscribers(data.subscribers || [])
setStats(data.stats || { total: 0, subscribed: 0, unsubscribed: 0 })
} else {
setError(data.error || "Failed to fetch subscribers")
console.error("API Error:", data)
}
} catch (err) {
console.error("Failed to fetch subscribers:", err)
setError("Network error - check console")
} finally {
setLoading(false)
}
}

const exportSubscribers = () => {
const csv = [
["Email", "Status", "Subscribed Date"],
...subscribers.map(sub => [
sub.email,
sub.status,
new Date(sub.created_at).toLocaleDateString()
])
].map(row => row.join(",")).join("\n")

const blob = new Blob([csv], { type: "text/csv" })
const url = window.URL.createObjectURL(blob)
const a = document.createElement("a")
a.href = url
a.download = `newsletter-subscribers-${new Date().toISOString().split("T")[0]}.csv`
a.click()
}

const sendNewsletter = async () => {
if (!subject || !content) {
alert("Please fill in both subject and content")
return
}

if (!confirm(`Send newsletter to ${stats.subscribed} subscribers?`)) {
return
}

setSending(true)
try {
const response = await fetch("/api/admin/newsletter/send", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({ subject, content }),
})

const data = await response.json()

if (response.ok) {
alert(`Newsletter sent successfully to ${data.sent} subscribers!`)
setSubject("")
setContent("")
} else {
alert(`Failed to send newsletter: ${data.error}`)
}
} catch {
alert("Failed to send newsletter")
} finally {
setSending(false)
}
}

if (loading) {
return (
<div className="flex items-center justify-center min-h-screen">
<Loader2 className="h-8 w-8 animate-spin" />
</div>
)
}

if (error) {
return (
<div className="flex items-center justify-center min-h-screen">
<div className="bg-red-500/10 border border-red-500 rounded-lg p-6 max-w-md">
<h2 className="text-xl font-bold text-red-500 mb-2">Error Loading Subscribers</h2>
<p className="text-foreground/70">{error}</p>
<p className="text-sm text-foreground/50 mt-4">
Make sure you're logged in as an admin and RLS policies are configured correctly.
</p>
</div>
</div>
)
}

return (
<div className="container mx-auto p-6 max-w-6xl">
<div className="space-y-6">
<div>
<h1 className="text-3xl font-bold">Newsletter Management</h1>
<p className="text-foreground/70">Manage subscribers and send newsletters</p>
</div>

{/* Stats */}
<div className="grid grid-cols-1 md:grid-cols-3 gap-4">
<div className="bg-card border border-border rounded-lg p-6">
<div className="flex items-center justify-between">
<div>
<p className="text-sm text-foreground/70">Total Subscribers</p>
<p className="text-3xl font-bold">{stats.total}</p>
</div>
<Users className="h-8 w-8 text-primary" />
</div>
</div>
<div className="bg-card border border-border rounded-lg p-6">
<div className="flex items-center justify-between">
<div>
<p className="text-sm text-foreground/70">Active</p>
<p className="text-3xl font-bold text-green-500">{stats.subscribed}</p>
</div>
<Mail className="h-8 w-8 text-green-500" />
</div>
</div>
<div className="bg-card border border-border rounded-lg p-6">
<div className="flex items-center justify-between">
<div>
<p className="text-sm text-foreground/70">Unsubscribed</p>
<p className="text-3xl font-bold text-red-500">{stats.unsubscribed}</p>
</div>
<Mail className="h-8 w-8 text-red-500" />
</div>
</div>
</div>

<Tabs defaultValue="subscribers" className="w-full">
<TabsList>
<TabsTrigger value="subscribers">Subscribers</TabsTrigger>
<TabsTrigger value="send">Send Newsletter</TabsTrigger>
</TabsList>

<TabsContent value="subscribers" className="space-y-4">
<div className="flex justify-between items-center">
<h2 className="text-xl font-semibold">All Subscribers</h2>
<Button onClick={exportSubscribers} variant="outline">
<Download className="h-4 w-4 mr-2" />
Export CSV
</Button>
</div>

<div className="bg-card border border-border rounded-lg overflow-hidden">
<div className="overflow-x-auto">
<table className="w-full">
<thead className="bg-muted">
<tr>
<th className="text-left p-4">Email</th>
<th className="text-left p-4">Status</th>
<th className="text-left p-4">Subscribed Date</th>
</tr>
</thead>
<tbody>
{subscribers.map((sub) => (
<tr key={sub.id} className="border-t border-border">
<td className="p-4">{sub.email}</td>
<td className="p-4">
<span className={`px-2 py-1 rounded text-xs ${
sub.status === "subscribed"
? "bg-green-500/20 text-green-500"
: "bg-red-500/20 text-red-500"
}`}>
{sub.status}
</span>
</td>
<td className="p-4">
{new Date(sub.created_at).toLocaleDateString()}
</td>
</tr>
))}
</tbody>
</table>
</div>
</div>
</TabsContent>

<TabsContent value="send" className="space-y-4">
<div className="bg-card border border-border rounded-lg p-6 space-y-4">
<h2 className="text-xl font-semibold">Compose Newsletter</h2>

<div className="space-y-2">
<label className="text-sm font-medium">Subject</label>
<Input
placeholder="Newsletter subject..."
value={subject}
onChange={(e) => setSubject(e.target.value)}
disabled={sending}
/>
</div>

<div className="space-y-2">
<label className="text-sm font-medium">Content (HTML supported)</label>
<textarea
className="w-full min-h-[300px] p-3 rounded-md border border-border bg-background font-mono text-sm"
placeholder={`<h2 style="color: #667eea; margin-top: 0;">Welcome to Our Newsletter!</h2>
<p>Here's what's new this week:</p>
<ul style="line-height: 1.8;">
<li><strong>New Feature:</strong> Description here</li>
<li><strong>Upcoming Event:</strong> Details here</li>
<li><strong>Community Highlight:</strong> Share achievements</li>
</ul>
<p>Stay tuned for more updates!</p>`}
value={content}
onChange={(e) => setContent(e.target.value)}
disabled={sending}
/>
<p className="text-xs text-foreground/60">
💡 Tip: Use HTML for formatting. The template includes a beautiful header, footer, and social links automatically.
</p>
</div>

<Button
onClick={sendNewsletter}
disabled={sending || !subject || !content}
className="w-full"
>
{sending ? (
<>
<Loader2 className="h-4 w-4 mr-2 animate-spin" />
Sending...
</>
) : (
<>
<Send className="h-4 w-4 mr-2" />
Send to {stats.subscribed} Subscribers
</>
)}
</Button>
</div>
</TabsContent>
</Tabs>
</div>
</div>
)
}
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