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namespace CrupestApi.Commons.Crud;
public static class CrudWebApplicationExtensions
{
public static WebApplication UseCrudCore(this WebApplication app)
{
app.Use(async (context, next) =>
{
try
{
await next();
}
catch (EntityNotExistException)
{
await context.ResponseMessageAsync("Requested entity does not exist.", StatusCodes.Status404NotFound);
}
catch (UserException e)
{
await context.ResponseMessageAsync(e.Message);
}
});
return app;
}
public static WebApplication MapCrud<TEntity>(this WebApplication app, string path, string? permission) where TEntity : class
{
app.MapGet(path, async (context) =>
{
if (!context.RequirePermission(permission)) return;
var crudService = context.RequestServices.GetRequiredService<CrudService<TEntity>>();
var entityJsonHelper = context.RequestServices.GetRequiredService<EntityJsonHelper<TEntity>>();
var allEntities = crudService.GetAll();
await context.ResponseJsonAsync(allEntities.Select(e => entityJsonHelper.ConvertEntityToDictionary(e)));
});
app.MapGet(path + "/{key}", async (context) =>
{
if (!context.RequirePermission(permission)) return;
var crudService = context.RequestServices.GetRequiredService<CrudService<TEntity>>();
var entityJsonHelper = context.RequestServices.GetRequiredService<EntityJsonHelper<TEntity>>();
var key = context.Request.RouteValues["key"]?.ToString();
if (key == null)
{
await context.ResponseMessageAsync("Please specify a key in path.");
return;
}
var entity = crudService.GetByKey(key);
await context.ResponseJsonAsync(entityJsonHelper.ConvertEntityToDictionary(entity));
});
app.MapPost(path, async (context) =>
{
if (!context.RequirePermission(permission)) return;
var crudService = context.RequestServices.GetRequiredService<CrudService<TEntity>>();
var entityJsonHelper = context.RequestServices.GetRequiredService<EntityJsonHelper<TEntity>>();
var jsonDocument = await context.Request.ReadJsonAsync();
var key = crudService.Create(entityJsonHelper.ConvertJsonToEntityForInsert(jsonDocument.RootElement));
await context.ResponseJsonAsync(entityJsonHelper.ConvertEntityToDictionary(crudService.GetByKey(key)));
});
app.MapPatch(path + "/{key}", async (context) =>
{
if (!context.RequirePermission(permission)) return;
var key = context.Request.RouteValues["key"]?.ToString();
var crudService = context.RequestServices.GetRequiredService<CrudService<TEntity>>();
var entityJsonHelper = context.RequestServices.GetRequiredService<EntityJsonHelper<TEntity>>();
if (key == null)
{
await context.ResponseMessageAsync("Please specify a key in path.");
return;
}
var jsonDocument = await context.Request.ReadJsonAsync();
var entity = entityJsonHelper.ConvertJsonToEntityForUpdate(jsonDocument.RootElement, out var updateBehavior);
var newKey = crudService.UpdateByKey(key, entity, updateBehavior);
await context.ResponseJsonAsync(entityJsonHelper.ConvertEntityToDictionary(crudService.GetByKey(newKey)));
});
app.MapDelete(path + "/{key}", async (context) =>
{
if (!context.RequirePermission(permission)) return;
var crudService = context.RequestServices.GetRequiredService<CrudService<TEntity>>();
var key = context.Request.RouteValues["key"]?.ToString();
if (key == null)
{
await context.ResponseMessageAsync("Please specify a key in path.");
return;
}
var deleted = crudService.DeleteByKey(key);
if (deleted)
await context.ResponseMessageAsync("Deleted.", StatusCodes.Status200OK);
else
await context.ResponseMessageAsync("Not exist.", StatusCodes.Status200OK);
});
return app;
}
}
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