From fc077e16adf2860af3d32a60cabd67f57bab0803 Mon Sep 17 00:00:00 2001
From: Marc Coquand <marc@mccd.space>
Date: Tue, 26 Dec 2023 10:51:13 -0600
Subject: Support json output

---
 bin/main.ml    | 27 ++++++++++++++++-----------
 lib/fixture.ml | 20 ++++++++++++++++++++
 2 files changed, 36 insertions(+), 11 deletions(-)

diff --git a/bin/main.ml b/bin/main.ml
index 29f354f..d644133 100644
--- a/bin/main.ml
+++ b/bin/main.ml
@@ -9,17 +9,20 @@ let parse (s : string) =
 
 let fixgen content output_type () =
   let result = parse content in
-  if output_type != "csv"
-  then print_endline "Only csv output is supported"
-  else (
-    match result with
-    | Some ast ->
-      Ast_types.compile ast
-      |> List.iter (fun (name, file) ->
-        let result = Fixture.csv_of_generated_fixtures file in
-        print_endline ("FILE NAME: " ^ name);
-        print_endline result)
-    | None -> print_endline "error")
+  let generate_output =
+    match output_type with
+    | "csv" -> Fixture.csv_of_generated_fixtures
+    | "json" -> Fixture.json_of_generated_fixtures
+    | _ -> failwith "Unsupported output type, supported types are: json, csv"
+  in
+  match result with
+  | Some ast ->
+    Ast_types.compile ast
+    |> List.iter (fun (name, file) ->
+      let result = generate_output file in
+      print_endline ("FILE NAME: " ^ name);
+      print_endline result)
+  | None -> print_endline "error"
 
 
 let file =
@@ -27,6 +30,8 @@ let file =
   Arg.(required & pos 0 (some string) None & info [] ~docv:"PROGRAM" ~doc)
 
 
+(* TODO: Support option to set output folder *)
+
 let output_type =
   let doc = "Set output file type, supported=csv" in
   Arg.(value & opt string "csv" & info [ "f"; "file-type" ] ~docv:"FILE TYPE" ~doc)
diff --git a/lib/fixture.ml b/lib/fixture.ml
index d5c77fa..d28d4b3 100644
--- a/lib/fixture.ml
+++ b/lib/fixture.ml
@@ -67,6 +67,10 @@ let id_of_fixture fixture =
 
 
 (* TODO: Support email *)
+(* TODO: Support arbitrary string *)
+(* TODO: Support "hashed" password *)
+(* TODO: Support variables using @ *)
+(* TODO: Support JSON export *)
 
 let rec replicate element n =
   match n with
@@ -118,3 +122,19 @@ let csv_of_generated_fixtures fixtures =
 let%test "csv_of_generated_fixtures" =
   let result = [ [ "id"; "name" ]; [ "1234"; "John" ] ] |> csv_of_generated_fixtures in
   result = "id,name\n1234,John"
+
+
+let json_of_generated_fixtures fixtures =
+  let headers = List.hd fixtures in
+  let rows = List.tl fixtures in
+  let json_of_row row =
+    let pairs = List.combine headers row in
+    let json_of_pair (key, value) = "\"" ^ key ^ "\": \"" ^ value ^ "\"" in
+    "{" ^ String.concat ", " (List.map json_of_pair pairs) ^ "}"
+  in
+  "[" ^ String.concat ", " (List.map json_of_row rows) ^ "]"
+
+
+let%test "json_of_generated_fixtures" =
+  let result = [ [ "id"; "name" ]; [ "1234"; "John" ] ] |> json_of_generated_fixtures in
+  result = "[{\"id\": \"1234\", \"name\": \"John\"}]"
-- 
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