From 2636395cbfd71b13dc4aeb5e4537ef3a03d3257e Mon Sep 17 00:00:00 2001
From: Xiaohan-Tian <157918347+Xiaohan-Tian@users.noreply.github.com>
Date: Fri, 12 Dec 2025 17:07:02 -0800
Subject: [PATCH] feat: added functional chords resource files

---
 public/resources/modes/chords.json            | 24 +++++++
 public/resources/modes/functional_chords.json | 67 +++++++++++++++++++
 2 files changed, 91 insertions(+)
 create mode 100644 public/resources/modes/chords.json
 create mode 100644 public/resources/modes/functional_chords.json

diff --git a/public/resources/modes/chords.json b/public/resources/modes/chords.json
new file mode 100644
index 0000000..043f234
--- /dev/null
+++ b/public/resources/modes/chords.json
@@ -0,0 +1,24 @@
+{
+    "I": ["C", "E", "G"],
+    "I⁶": ["E", "G", "C"],
+    "i": ["C", "Eb", "G"],
+    "i⁶": ["Eb", "G", "C"],
+    "i°": ["C", "Eb", "Gb"], 
+    "II": ["D", "F#", "A"],
+    "♭II": ["Db", "F", "Ab"],
+    "ii": ["D", "F", "A"],
+    "ii°": ["D", "F", "Ab"],
+    "III": ["Eb", "G", "Bb"],
+    "iii": ["E", "G", "B"],
+    "IV": ["F", "A", "C"],
+    "IV⁶": ["A", "C", "F"],
+    "iv": ["F", "Ab", "C"],
+    "iv⁶": ["Ab", "C", "F"],
+    "V": ["G", "B", "D"],
+    "V7": ["G", "B", "D", "F"],
+    "v": ["G", "Bb", "D"],
+    "VI": ["Ab", "C", "Eb"],
+    "vi": ["A", "C", "E"],
+    "♭VII": ["Bb", "D", "F"],
+    "vii°": ["B", "D", "F"]
+}
diff --git a/public/resources/modes/functional_chords.json b/public/resources/modes/functional_chords.json
new file mode 100644
index 0000000..809b778
--- /dev/null
+++ b/public/resources/modes/functional_chords.json
@@ -0,0 +1,67 @@
+{
+    "ionian": {
+        "T": ["I", "vi", "iii", "I⁶"],
+        "S": ["IV", "ii", "vi", "IV⁶"],
+        "D": ["V", "V7", "vii°", "♭II"]
+    },
+
+    "aeolian": {
+        "T": ["i", "VI", "III", "i⁶"],
+        "S": ["iv", "ii°", "VI", "iv⁶"],
+        "D": ["v", "♭VII"]
+    },
+
+    "harmonic_minor": {
+        "T": ["i", "VI", "III", "i⁶"],
+        "S": ["iv", "ii°", "VI", "iv⁶"],
+        "D": ["V", "V7", "vii°", "♭II"]
+    },
+
+    "melodic_minor": {
+        "T": ["i", "III", "VI", "i⁶"],
+        "S": ["IV", "ii", "iv"],
+        "D": ["V", "vii°"]
+    },
+
+    "dorian": {
+        "T": ["i", "III", "i⁶"],
+        "S": ["IV", "ii"],
+        "D": ["v", "♭VII"]
+    },
+
+    "phrygian": {
+        "T": ["i", "i⁶"],
+        "S": ["♭II", "iv"],
+        "D": []
+    },
+
+    "lydian": {
+        "T": ["I", "I⁶"],
+        "S": ["II"],
+        "D": ["V"]
+    },
+
+    "mixolydian": {
+        "T": ["I", "vi"],
+        "S": ["IV", "ii"],
+        "D": ["v", "♭VII"]
+    },
+
+    "locrian": {
+        "T": ["i°"],
+        "S": ["♭II", "iv"],
+        "D": []
+    },
+
+    "phrygian_dominant": {
+        "T": ["i", "i⁶"],
+        "S": ["♭II", "iv"],
+        "D": ["V", "vii°"]
+    },
+
+    "harmonic_major": {
+        "T": ["I", "vi", "iii"],
+        "S": ["IV", "ii"],
+        "D": ["V", "V7", "vii°", "♭II"]
+    }
+}