From 9abe95502760685aac75e2c03f932b28ded5303e Mon Sep 17 00:00:00 2001
From: Nitsan Avni <nitsanav@gmail.com>
Date: Mon, 6 Feb 2023 22:38:45 +0000
Subject: [PATCH] add jq translation

---
 jq/README.md           | 21 ++++++++++++++++++
 jq/gilded-rose.jq      | 49 ++++++++++++++++++++++++++++++++++++++++++
 jq/test-gilded-rose.sh |  3 +++
 jq/texttest_fixture.jq | 22 +++++++++++++++++++
 4 files changed, 95 insertions(+)
 create mode 100644 jq/README.md
 create mode 100644 jq/gilded-rose.jq
 create mode 100755 jq/test-gilded-rose.sh
 create mode 100644 jq/texttest_fixture.jq

diff --git a/jq/README.md b/jq/README.md
new file mode 100644
index 00000000..a4dd4d82
--- /dev/null
+++ b/jq/README.md
@@ -0,0 +1,21 @@
+# Installs
+
+[install jaq](https://github.com/01mf02/jaq#installation) (latest development version)
+
+# Failing Unit Test
+
+```shell
+./test-gilded-rose.sh
+```
+
+# TextTest Fixture
+
+```shell
+jaq -nr "$(cat gilded-rose.jq) $(cat texttest_fixture.jq)"
+```
+
+Specify days (e.g. 10 days):
+
+```shell
+jaq --arg days 10 -nr "$(cat gilded-rose.jq) $(cat texttest_fixture.jq)"
+```
diff --git a/jq/gilded-rose.jq b/jq/gilded-rose.jq
new file mode 100644
index 00000000..32689e2f
--- /dev/null
+++ b/jq/gilded-rose.jq
@@ -0,0 +1,49 @@
+def update_quality:
+    if .name != "Aged Brie" and .name != "Backstage passes to a TAFKAL80ETC concert" then
+        if .quality > 0 then
+            if .name != "Sulfuras, Hand of Ragnaros" then
+                .quality = .quality - 1
+            else . end
+        else . end
+    else
+        if .quality < 50 then
+            .quality = .quality + 1
+            |
+            if .name == "Backstage passes to a TAFKAL80ETC concert" then
+                if .sell_in < 11 then
+                    if .quality < 50 then
+                        .quality = .quality + 1
+                    else . end
+                else . end
+                |
+                if .sell_in < 6 then
+                    if .quality < 50 then
+                        .quality = .quality + 1
+                    else . end
+                else . end
+            else . end
+        else . end
+    end
+    |
+    if .name != "Sulfuras, Hand of Ragnaros" then
+        .sell_in = .sell_in - 1
+    else . end
+    |
+    if .sell_in < 0 then
+        if .name != "Aged Brie" then
+            if .name != "Backstage passes to a TAFKAL80ETC concert" then
+                if .quality > 0 then
+                    if .name != "Sulfuras, Hand of Ragnaros" then
+                        .quality = .quality - 1
+                    else . end
+                else . end
+            else
+                .quality = .quality - .quality
+            end
+        else
+            if .quality < 50 then
+                .quality = .quality + 1
+            else . end
+        end
+    else . end
+    ;
diff --git a/jq/test-gilded-rose.sh b/jq/test-gilded-rose.sh
new file mode 100755
index 00000000..2e32d49f
--- /dev/null
+++ b/jq/test-gilded-rose.sh
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+jaq -en "$(cat gilded-rose.jq)"'{name:"foo",sell_in:0,quality:0} | update_quality | .name == "fixme"'
diff --git a/jq/texttest_fixture.jq b/jq/texttest_fixture.jq
new file mode 100644
index 00000000..28fcd69e
--- /dev/null
+++ b/jq/texttest_fixture.jq
@@ -0,0 +1,22 @@
+"OMGHAI!",
+(
+    [
+        { name: "+5 Dexterity Vest", sell_in: 10, quality: 20 },
+        { name: "Aged Brie", sell_in: 2, quality: 0 },
+        { name: "Elixir of the Mongoose", sell_in: 5, quality: 7 },
+        { name: "Sulfuras, Hand of Ragnaros", sell_in: 0, quality: 80 },
+        { name: "Sulfuras, Hand of Ragnaros", sell_in: 1, quality: 80 },
+        { name: "Backstage passes to a TAFKAL80ETC concert", sell_in: 15, quality: 20 },
+        { name: "Backstage passes to a TAFKAL80ETC concert", sell_in: 10, quality: 49 },
+        { name: "Backstage passes to a TAFKAL80ETC concert", sell_in: 5, quality: 49 },
+        { name: "Conjured Mana Cake", sell_in: 3, quality: 6}  # <-- :O
+    ] |
+    { items: ., day: 0 } |
+    recurse(.day += 1 | .items = [.items[] | update_quality]; .day < ($ARGS.named.days // 2 | tonumber)) |
+    (
+        "",
+        (["-------- day ", (.day | tostring), " --------"] | add),
+        ("name, sellIn, quality"),
+        (.items[] | [.name, .sell_in, .quality | tostring] | join(", "))
+    )
+)