created SaveFileUploadDialog and SaveParserBackendService

src/app/login/page.tsx

@@ -1,7 +1,8 @@
 'use client'
 
 import { useState } from 'react'
-import { authService } from '@/services/authService'
+import { authService } from '@/services/AuthService'
+import FormError from '@/components/FormError'
 
 export default function LoginPage() {
     const [formData, setFormData] = useState({
@@ -10,7 +11,7 @@ export default function LoginPage() {
         stayLoggedIn: true,
     })
 
-    const [error, setError] = useState('')
+    const [error, setError] = useState<string | null>(null)
 
     const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
         const { name, value, type, checked } = e.target
@@ -36,11 +37,7 @@ export default function LoginPage() {
         <div className="container mt-5" style={{ maxWidth: '500px' }}>
             <h2 className="mb-4">Login</h2>
 
-            {error && (
-                <div className="alert alert-danger" role="alert">
-                    {error}
-                </div>
-            )}
+            <FormError message={error} />
 
             <form onSubmit={handleSubmit}>
                 <div className="mb-3">

src/app/page.tsx

@@ -0,0 +1,11 @@
+import SaveFileUploadingDialog from '@/components/SaveFileUploadingDialog'
+
+export default function HomePage() {
+    return (
+        <div className="container mt-5 text-center">
+            <h1 className="mb-4">Welcome to Paradox Save Parser!</h1>
+
+            <SaveFileUploadingDialog />
+        </div>
+    )
+}

src/app/register/page.tsx

@@ -2,7 +2,8 @@
 
 import { useState } from 'react'
 import { useRouter } from 'next/navigation'
-import { authService } from '@/services/authService'
+import { authService } from '@/services/AuthService'
+import FormError from '@/components/FormError'
 
 export default function RegisterPage() {
     const router = useRouter()
@@ -14,7 +15,7 @@ export default function RegisterPage() {
         confirmPassword: '',
     })
 
-    const [error, setError] = useState('')
+    const [error, setError] = useState<string | null>(null)
 
     const handleChange = (e: React.ChangeEvent<HTMLInputElement>) => {
         setFormData((prev) => ({
@@ -45,11 +46,7 @@ export default function RegisterPage() {
         <div className="container mt-5" style={{ maxWidth: '400px' }}>
             <h2 className="mb-4 text-center">Register</h2>
 
-            {error && (
-                <div className="alert alert-danger" role="alert">
-                    {error}
-                </div>
-            )}
+            <FormError message={error} />
 
             <form onSubmit={handleSubmit}>
                 <div className="mb-3">

src/components/FormError.tsx

@@ -0,0 +1,13 @@
+interface FormErrorProps {
+    message: string | null
+}
+
+export default function FormError(props: FormErrorProps) {
+    if (!props.message || props.message === '') return null
+
+    return (
+        <div className="alert alert-danger" role="alert">
+            {props.message}
+        </div>
+    )
+}

src/components/SaveFileUploadingDialog.tsx

@@ -0,0 +1,79 @@
+'use client'
+
+import { saveParserBackendService, UploadSaveResponse } from '@/services/SaveParserBackendService'
+import { useState } from 'react'
+import FormError from './FormError'
+
+export enum GameEnum {
+    EU4 = 'eu4',
+    Stellaris = 'stellaris',
+}
+
+export default function SaveFileUploadingDialog() {
+    const [error, setError] = useState<string | null>(null)
+    const [selectedFile, setSelectedFile] = useState<File | null>(null)
+    const [game, setGame] = useState<GameEnum>(GameEnum.EU4)
+    const [uploadResult, setUploadResult] = useState<UploadSaveResponse | null>(null)
+
+    const handleFileChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+        if (e.target.files && e.target.files[0]) {
+            setSelectedFile(e.target.files[0])
+        }
+    }
+
+    const handleUpload = async () => {
+        try {
+            if (!selectedFile) return
+
+            console.log('Uploading file:', selectedFile.name)
+            const result = await saveParserBackendService.uploadSave(game, selectedFile)
+            console.log('Got response:', result)
+            setUploadResult(result)
+        } catch (err: any) {
+            console.error(err.message)
+            setError(err.message)
+        }
+    }
+
+    return (
+        <div className="container mt-5" style={{ maxWidth: '500px' }}>
+            <h3 className="mb-2 fw-semibold">Select game save file</h3>
+            <FormError message={error} />
+
+            <div className="mb-3">
+                <label htmlFor="gameSelect" className="form-label">
+                    Select Game
+                </label>
+                <select
+                    id="gameSelect"
+                    className="form-select"
+                    value={game}
+                    onChange={(e) => setGame(e.target.value as GameEnum)}
+                >
+                    {Object.values(GameEnum).map((value) => (
+                        <option key={value} value={value}>
+                            {value}
+                        </option>
+                    ))}
+                </select>
+            </div>
+
+            <input type="file" className="form-control mb-3" onChange={handleFileChange} />
+            <button className="btn btn-primary" onClick={handleUpload} disabled={!selectedFile}>
+                Upload File
+            </button>
+
+            {selectedFile && (
+                <div className="mt-3">
+                    File: <strong>{selectedFile.name}</strong>
+                </div>
+            )}
+
+            {uploadResult && (
+                <div className="mt-3">
+                    Save Id: <strong>{uploadResult.id}</strong>
+                </div>
+            )}
+        </div>
+    )
+}

src/services/SaveParserBackendService.ts

@@ -0,0 +1,55 @@
+export interface UploadSaveResponse {
+    id: string
+}
+
+export interface SaveStatusResponse {
+    id: string
+    game: string
+    status: string
+    uploadDateTime: string
+}
+
+export class SaveParserBackendService {
+    private API_BASE = 'http://localhost:5226'
+
+    async uploadSave(game: string, file: File): Promise<UploadSaveResponse> {
+        const url = `${this.API_BASE}/uploadSave?game=${encodeURIComponent(game)}`
+        const response = await fetch(url, {
+            method: 'POST',
+            headers: {
+                'Content-Type': 'text/plain',
+            },
+            body: file,
+        })
+
+        if (!response.ok) {
+            throw new Error(`Failed to upload save: ${response.statusText} \n${await response.text()}`)
+        }
+
+        return await response.json()
+    }
+
+    async getSaveStatus(id: string): Promise<SaveStatusResponse> {
+        const url = `${this.API_BASE}/getSaveStatus?id=${encodeURIComponent(id)}`
+        const response = await fetch(url)
+
+        if (!response.ok) {
+            throw new Error(`Failed to get save status: ${response.statusText} \n${await response.text()}`)
+        }
+
+        return await response.json()
+    }
+
+    async getParsedSave(id: string): Promise<Record<string, any>> {
+        const url = `${this.API_BASE}/getParsedSave?id=${encodeURIComponent(id)}`
+        const response = await fetch(url)
+
+        if (!response.ok) {
+            throw new Error(`Failed to get parsed save: ${response.statusText} \n${await response.text()}`)
+        }
+
+        return await response.json()
+    }
+}
+
+export const saveParserBackendService = new SaveParserBackendService()