From 86b5343292e852155dab10fc8db39c2dd2b932eb Mon Sep 17 00:00:00 2001
From: Marius Peter <dev@marius-peter.com>
Date: Tue, 21 Oct 2025 21:36:09 +0200
Subject: Added views, formlets, and handlers for nutrient target management.

---
 formlets.rkt | 49 ++++++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 46 insertions(+), 3 deletions(-)

(limited to 'formlets.rkt')

diff --git a/formlets.rkt b/formlets.rkt
index 406a54a..d0067e3 100644
--- a/formlets.rkt
+++ b/formlets.rkt
@@ -1,11 +1,14 @@
 #lang racket
 
-(provide measurements-formlet)
+(provide measurements-formlet
+         targets-formlet)
 
 (require gregor
          web-server/http
          web-server/formlets
-         "models/nutrient.rkt")
+         "models/nutrient.rkt"
+         "models/crop.rkt"
+         "models/crop-requirement.rkt")
 
 
 (define date-formlet
@@ -26,7 +29,7 @@
                           [id ,(number->string id)]
                           [step "0.1"]
                           [placeholder ,(nutrient-name nutrient)])))
-  (define input-label `(label ((for ,(number->string id))) ,(nutrient-name nutrient)))
+  (define input-label `(label ([for ,(number->string id)]) ,(nutrient-name nutrient)))
   (formlet
    (#%#
     (div ([class "form-floating mb-3"])
@@ -51,3 +54,43 @@
    (let ([measured-on (first measured-on*)]
          [measurements (filter pair? measurements*)]) ; drop #f’s from empty values
      (values measured-on measurements))))
+
+(define (crop-requirement-formlet requirement)
+  (define id (crop-requirement-id requirement))
+  (define profile (crop-requirement-profile requirement))
+  (define maybe-crop (crop-requirement-crop-id requirement))
+  (define crop (if maybe-crop (crop-name (get-crop #:id maybe-crop)) #f))
+  (define number-input
+    (input #:type "number"
+           #:attributes `([class "form-control"]
+                          [id ,(number->string id)]
+                          [step "1"]
+                          [placeholder ,profile])))
+  (define input-label `(label ([for ,(number->string id)])
+                              ,(if crop
+                                   (format "~a (~a)" crop profile)
+                                   (format "~a" profile))))
+  (formlet
+   (#%#
+    (div ([class "form-floating mb-3"])
+         ,{=> number-input requirement-proportion-b}
+         ,input-label))
+   (let ([requirement-proportion (string->number
+                                  (bytes->string/utf-8
+                                   (binding:form-value requirement-proportion-b)))])
+     (and requirement-proportion (cons requirement requirement-proportion)))))
+
+(define (targets-formlet)
+  (formlet*
+   (#%#
+    `(div ([class "mb-3"])
+          (h5 "Date ciblée")
+          ,{=>* date-formlet effective-on*})
+    `(div ([class "mb-3"])
+          (h5 "Valeurs cibles")
+          ,@(for/list ([requirement (get-crop-requirements)])
+              {=>* (crop-requirement-formlet requirement) requirements*}))
+    {=>* (submit "Enregistrer la cible" #:attributes '([class "btn btn-primary"])) _})
+   (let ([effective-on (first effective-on*)]
+         [requirements (filter pair? requirements*)]) ; drop #f’s from empty values
+     (values effective-on requirements))))
-- 
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