create authorization in csharp

main.cs
dotnet add package Microsoft.AspNetCore.Authentication.JwtBearer
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main.cs
services.AddAuthentication(options =>
{
    options.DefaultAuthenticateScheme = JwtBearerDefaults.AuthenticationScheme;
    options.DefaultChallengeScheme = JwtBearerDefaults.AuthenticationScheme;
}).AddJwtBearer(options =>
{
    options.Authority = "<your_authority>";
    options.Audience = "<your_audience>";
});
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main.cs
app.UseAuthentication();
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main.cs
[Authorize]
[HttpGet("private")]
public IActionResult GetPrivateData()
{
    // Return private data
}
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main.cs
[HttpPost("login")]
public IActionResult Login()
{
    var claims = new[]
    {
        new Claim(ClaimTypes.NameIdentifier, "1"),
        new Claim(ClaimTypes.Name, "user")
    };

    var token = new JwtSecurityToken(
        issuer: "<your_issuer>",
        audience: "<your_audience>",
        claims: claims,
        expires: DateTime.UtcNow.AddDays(7),
        signingCredentials: new SigningCredentials(
                new SymmetricSecurityKey(Encoding.ASCII.GetBytes("<your_secret_key>")),
                SecurityAlgorithms.HmacSha256Signature)
    );

    return Ok(new
    {
        token = new JwtSecurityTokenHandler().WriteToken(token)
    });
}
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