diff --git a/.env.example b/.env.example
index e3aefd1..64fbfb2 100644
--- a/.env.example
+++ b/.env.example
@@ -7,16 +7,9 @@ PGADMIN_PASSWORD=!ChangeMe!
 
 POSTGREST_PASSWORD=!ChangeMe!
 
-# CouchDB
-COUCHDB_USER=admin
-COUCHDB_PASSWORD=!ChangeMe!
-
-# MongoDB
-MONGODB_USER=admin
-MONGODB_PASSWORD=!ChangeMe!
-
-# Redis
-REDIS_PASSWORD=!ChangeMe!
-
-# Neo4J
-NEO4J_PASSWORD=!ChangeMe!
+# PostgREST
+POSTGREST_USER=postgrest
+POSTGREST_PASSWORD=9012
+POSTGREST_APP_SETTINGS_JWT_EXP=300
+POSTGREST_APP_SETTINGS_JWT_SECRET=ABCDEFGHJKLMNOPQRSTUVWXYZ0123456789  #example
+POSTGREST_JWT_SECRET=uavILHVIPAfWtiQWNleZS5OdJYEMrSLXk6sY4YqO          #example
diff --git a/data/categorie.csv b/data/categorie.csv
new file mode 100644
index 0000000..ba59d5a
--- /dev/null
+++ b/data/categorie.csv
@@ -0,0 +1,19 @@
+id,categorie
+1,Cereal flakes with fruits
+2,Cereal clusters with fruits
+3,Mueslis with nuts
+4,Chocolate cereals
+5,Cereal clusters with chocolate
+6,Mueslis
+7,Breakfast cereals
+8,Extruded cereals
+9,Filled cereals
+10,Mueslis with chocolate
+11,Cereals with honey
+12,Mixed cereal flakes
+13,Cereal flakes with chocolate
+14,Cereal flakes
+15,Corn flakes
+16,Crunchy mueslis
+17,Cereals with fruits
+18,Mueslis with fruits
diff --git a/data/marque.csv b/data/marque.csv
index 7a3e8a9..486af9b 100644
--- a/data/marque.csv
+++ b/data/marque.csv
@@ -89,7 +89,7 @@ id,marque,fournisseur
 170,Frosties,4
 171,Granola,5
 172,Country Crisp,5
-173,Froot Loops,4v
+173,Froot Loops,4
 174,All Bran,4
 175,Corn Flakes,4
 176,Miel Pops,4
diff --git a/postgresql-entrypoint-initdb.d/01_initdb.sql b/postgresql-entrypoint-initdb.d/01_initdb.sql
index d4b9abf..1a2200e 100644
--- a/postgresql-entrypoint-initdb.d/01_initdb.sql
+++ b/postgresql-entrypoint-initdb.d/01_initdb.sql
@@ -1,4 +1,9 @@
 show server_version;
+
+-- ----------------------------------------------------------------------
+-- extensions
+-- ----------------------------------------------------------------------
+
 select * from pg_available_extensions;
 
 create schema postgis;
@@ -8,12 +13,14 @@ create extension if not exists pgrouting schema postgis;
 create schema ext;
 create extension if not exists ltree schema ext;
 create extension if not exists pgcrypto schema ext;
+create extension if not exists vector schema ext;
+create extension if not exists isn;
 
 create schema pgtap;
 create extension if not exists pgtap schema pgtap;
 
 -- ----------------------------------------------------------------------
--- pays
+-- Pays
 -- ----------------------------------------------------------------------
 create table pays (
   code2 text not null,
@@ -186,6 +193,64 @@ alter table only pays_devises
 select '=============== FIN DES CLES ETRANGERES Geo' as msg;
 -- ----------------------------------------------------------------------
 
+-- ----------------------------------------------------------------------
+-- Fournisseurs
+-- ----------------------------------------------------------------------
+
+create table fournisseur (
+  id int primary key,
+  fournisseur text not null
+);
+
+
+-- ----------------------------------------------------------------------
+-- Produits
+-- ----------------------------------------------------------------------
+create table produit (
+  id bigint primary key,
+  ean13 EAN13 null,
+  nom text not null,
+  marque text null,
+  categorie text null,
+  energie int not null,
+  proteines float4 null,
+  glucides float4 null,
+  sucres float4 null,
+  graisses float4 null,
+  graisses_saturees float4 null,
+  sel float4 null,
+  fibres float4 null,
+  nutriscore int null,
+  additifs int null,
+  additifs_list text[] null,
+  potassium float null,
+  calcium float null,
+  magnesium float null,
+  sodium float null,
+  chlorure float null,
+  sulfate float null,
+  nitrate float null,
+  hydrogenocarbonate float null,
+  silice float null,
+  fluor float null,
+  residu float null,
+  ph float null,
+  vitamin_a float null,
+  vitamin_c float null
+);
+
+-- Ajouter les commentaires
+comment on column produit.potassium IS 'K⁺ en mg/L';
+comment on column produit.calcium IS 'Ca²⁺ en mg/L';
+comment on column produit.magnesium IS 'Mg²⁺ en mg/L';
+comment on column produit.sodium IS 'Na⁺ en mg/L';
+comment on column produit.chlorure IS 'Cl⁻ en mg/L';
+comment on column produit.sulfate IS 'SO₄²⁻ en mg/L';
+comment on column produit.nitrate IS 'NO₃⁻ en mg/L';
+comment on column produit.hydrogenocarbonate IS 'HCO₃⁻ en mg/L';
+comment on column produit.silice IS 'SiO₂ en mg/L';
+comment on column produit.fluor IS 'F en mg/L';
+
 create table adherent (
   id int primary key,
   nom text,
@@ -232,12 +297,13 @@ alter table ligne
 
 create table marque (
   id int primary key,
-  marque text not null
+  marque text not null,
+  fournisseur_id int
 );
 
-create table fournisseur (
+create table categorie (
   id int primary key,
-  fournisseur text not null
+  categorie text not null
 );
 
 create table region (
@@ -246,4 +312,25 @@ create table region (
 );
 
 insert into region values
-  (1, 'Est'), (2, 'Ouest');
+  (1, 'Est'), (2, 'Ouest'), (3, 'Nord'), (4, 'Sud'), (5, 'Centre');
+
+CREATE TABLE genres (
+  genre_id int primary key,
+  genre text
+);
+
+INSERT INTO genres (genre_id, genre) VALUES
+	 (1,'Science-Fiction'),
+	 (2,'Fantasy'),
+	 (3,'Young adult'),
+	 (4,'Bit-lit'),
+	 (5,'Policier'),
+	 (6,'Romance'),
+	 (7,'Espionnage'),
+	 (8,'Aventure'),
+	 (9,'Fantastique'),
+	 (10,'Historique'),
+	 (11,'Noir'),
+	 (12,'Biographie'),
+	 (13,'Cyberpunk'),
+	 (14,'Steampunk');
diff --git a/postgresql-entrypoint-initdb.d/02_seed.sql b/postgresql-entrypoint-initdb.d/02_seed.sql
index 0b63609..bd32bcd 100644
--- a/postgresql-entrypoint-initdb.d/02_seed.sql
+++ b/postgresql-entrypoint-initdb.d/02_seed.sql
@@ -13,4 +13,5 @@ truncate table fournisseur;
 \COPY ligne FROM '/tmp/ligne.csv' (FORMAT CSV, header, ENCODING 'UTF8');
 
 \COPY marque FROM '/tmp/marque.csv' (FORMAT CSV, header, ENCODING 'UTF8');
-\COPY fournisseur FROM '/tmp/marque.csv' (FORMAT CSV, header, ENCODING 'UTF8');
+\COPY fournisseur FROM '/tmp/fournisseur.csv' (FORMAT CSV, header, ENCODING 'UTF8');
+\COPY produit FROM '/tmp/produits/cereales_petitdejeuner.csv' (FORMAT CSV, header, ENCODING 'UTF8');
diff --git a/postgresql-entrypoint-initdb.d/11_postgis.sql b/postgresql-entrypoint-initdb.d/11_postgis.sql
index efaff63..6e34611 100644
--- a/postgresql-entrypoint-initdb.d/11_postgis.sql
+++ b/postgresql-entrypoint-initdb.d/11_postgis.sql
@@ -1,6 +1,8 @@
+create schema carte;
+
 set SEARCH_PATH to public,postgis;
 
-create table point (
+create table carte.point (
   id serial primary key,
   nom text not null,
   altitude double precision,
@@ -8,9 +10,9 @@ create table point (
 );
 
 create index idx_point_geom
-  on point using gist (geom);
+  on carte.point using gist (geom);
 
-create table route (
+create table carte.route (
   id serial primary key,
   depart int,
   arrivee int,
@@ -19,41 +21,118 @@ create table route (
 );
 
 create index idx_route_geom
-  on route using gist (geom);
+  on carte.route using gist (geom);
 
 create or replace function maj_longueur()
 returns trigger as $$
 begin
-  new.longueur := postgis.st_length(new.geom) * 1000;
+  new.longueur := postgis.st_length(postgis.st_transform(new.geom, 2154));
   return new;
 end;
 $$ language plpgsql;
 
 create trigger trigger_longueur
-  before insert or update on route
+  before insert or update on carte.route
   for each row
   execute function maj_longueur();
 
--- ************************************************************
+-- ----------------------------------------------------------------------
 
-create table route_cout (
-  route_id int references route(id),
+create table carte.route_cout (
+  route_id int references carte.route(id),
   tag text,
   cout float,
   cout_inverse float,
   primary key (route_id, tag)
 );
 
-create table zone (
+create table carte.zone (
   id int primary key,
   nom text,
   categorie text,
   geom postgis.geometry(multipolygon, 4326) -- on choisit srid 4326 (wgs84)
 );
 
--- ************************************************************
+-- ----------------------------------------------------------------------
+\COPY carte.point FROM '/tmp/point.csv' (FORMAT CSV, header, ENCODING 'UTF8');
+\COPY carte.route(id, depart, arrivee, geom) FROM '/tmp/route.csv' (FORMAT CSV, header, ENCODING 'UTF8');
+\COPY carte.route_cout FROM '/tmp/route_cout.csv' (FORMAT CSV, header, ENCODING 'UTF8');
+\COPY carte.zone FROM '/tmp/zone.csv' (FORMAT CSV, header, ENCODING 'UTF8');
+-- ----------------------------------------------------------------------
 
-\COPY point FROM '/tmp/point.csv' (FORMAT CSV, header, ENCODING 'UTF8');
-\COPY route(id, depart, arrivee, geom) FROM '/tmp/route.csv' (FORMAT CSV, header, ENCODING 'UTF8');
-\COPY route_cout FROM '/tmp/route_cout.csv' (FORMAT CSV, header, ENCODING 'UTF8');
-\COPY zone FROM '/tmp/zone.csv' (FORMAT CSV, header, ENCODING 'UTF8');
+-- ----------------------------------------------------------------------
+-- Mise à jour des coût suivant la pente et la nature de la route
+-- cout = longueur × coef_surface × ( 1 + coef_pente)
+-- Avec un minimum : cout = max⁡(cost, ϵ) pour éviter un coût négatif (< 0)  en descente
+
+WITH calc AS (
+  SELECT
+    r.id,
+    r.depart, r.arrivee,
+    rc.cout, rc.cout_inverse,
+    ST_Length(r.geom::geography) AS length_m,
+    p1.altitude AS alt_depart,
+    p2.altitude AS alt_arrivee,
+    rc.tag,
+    -- pente aller
+    (p2.altitude - p1.altitude) / NULLIF(ST_Length(r.geom::geography), 0) AS slope_forward,
+    -- pente retour
+    (p1.altitude - p2.altitude) / NULLIF(ST_Length(r.geom::geography), 0) AS slope_reverse,
+    CASE
+      WHEN tag = 'rue' THEN 1.0
+      WHEN tag = 'chemin' THEN 1.2
+      WHEN tag = 'sentier' THEN 1.4
+      ELSE 1.5
+    END as coef_surface
+  FROM carte.route r
+  JOIN carte.point p1 ON r.depart = p1.id
+  JOIN carte.point p2 ON r.arrivee = p2.id
+  JOIN carte.route_cout rc ON rc.route_id = r.id
+),
+costs AS (
+  SELECT *,
+    length_m * coef_surface *
+    CASE
+      WHEN slope_forward >= 0.10 THEN (1 + slope_forward * 3)
+      WHEN slope_forward >= 0.04 THEN (1 + slope_forward * 2)
+      WHEN slope_forward >= 0 THEN (1 + slope_forward * 1)
+      WHEN slope_forward >= -0.15 THEN (1 + slope_forward * 3)
+      ELSE (1 + abs(slope_forward) * 1) -- pénalité en cas de forte descente
+    end
+    AS new_cost_forward,
+
+    length_m * coef_surface *
+    CASE
+      WHEN slope_reverse >= 0.10 THEN (1 + slope_reverse * 3)
+      WHEN slope_reverse >= 0.04 THEN (1 + slope_reverse * 2)
+      WHEN slope_reverse >= 0 THEN (1 + slope_reverse * 1)
+      WHEN slope_reverse >= -0.15 THEN (1 + slope_reverse * 3)
+      ELSE (1 + abs(slope_reverse) * 1) -- pénalité en cas de forte descente
+    END
+    AS new_cost_reverse
+  FROM calc
+)
+UPDATE carte.route_cout rc
+SET
+  cout = CASE WHEN rc.cout = -1 THEN -1
+              ELSE GREATEST(c.new_cost_forward, 0.01) END,
+  cout_inverse = CASE WHEN rc.cout_inverse = -1 THEN -1
+                      ELSE GREATEST(c.new_cost_reverse, 0.01) END
+FROM costs c
+WHERE rc.route_id = c.id;
+
+CREATE OR REPLACE VIEW carte.routes_a_star AS
+SELECT
+  r.id AS id,
+  r.depart as source,
+  r.arrivee as target,
+  r.longueur,
+  rc.cout AS cost,
+  rc.cout_inverse AS reverse_cost,
+  ST_X(p1.geom) AS x1, ST_Y(p1.geom) AS y1,
+  ST_X(p2.geom) AS x2, ST_Y(p2.geom) AS y2,
+  r.geom
+FROM carte.route r
+JOIN carte.route_cout rc ON rc.route_id = r.id
+JOIN carte.point p1 ON r.depart = p1.id
+JOIN carte.point p2 ON r.arrivee = p2.id;