From d738a6cba484540a850308325d25b18a8f18dbe7 Mon Sep 17 00:00:00 2001
From: Robbi Bishop-Taylor <Robbi.BishopTaylor@ga.gov.au>
Date: Tue, 16 Jul 2024 05:52:42 +0000
Subject: [PATCH 1/4] Add multidate handling

---
 .../intertidal_c3/style_intertidal_cfg.py     | 27 +++++++++++++++++++
 .../intertidal_c3/utils_intertidal.py         |  9 +++++++
 2 files changed, 36 insertions(+)

diff --git a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py
index bc00d6299..0c282ec22 100644
--- a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py
+++ b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/style_intertidal_cfg.py
@@ -163,6 +163,33 @@
             "hot": "ta_hot",
         },
     },
+    "multi_date": [
+        {
+            "allowed_count_range": [2, 2],
+            "animate": False,
+            "preserve_user_date_order": True,
+            "pass_raw_data": True,
+            "aggregator_function": {
+                "function": "ows_refactored.sea_ocean_coast.intertidal_c3.utils_intertidal.multi_date_raw_elevation",
+                "mapped_bands": True,
+                "kwargs": {
+                    "band": "elevation",
+                }
+            },
+            "mpl_ramp": "RdBu",
+            "range": [-0.5, 0.5],
+            "legend": {
+                "begin": "-0.5",
+                "end": "0.5",
+                "ticks": [
+                    "-0.5",
+                    "0.0",
+                    "0.5",
+                ]
+            },
+            "feature_info_label": "elevation_difference",
+        },
+    ],
     "include_in_feature_info": False,
     "needed_bands": ["elevation", "ta_lot", "ta_hot"],
     "mpl_ramp": "viridis",
diff --git a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
index c75adf353..a63847a3e 100644
--- a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
+++ b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
@@ -41,3 +41,12 @@ def uncertainty_adaptive(data, band, lot, hot, band_mapper=None):
     proportion_array = data[band] / otr
 
     return proportion_array
+
+
+def multi_date_raw_elevation(data, band, band_mapper=None):
+    """
+    Compares two elevation layers and calculates difference in elevation.
+    """
+    data1, data2 = (data.sel(time=dt) for dt in data.coords["time"].values)
+
+    return data2[band] - data1[band]

From 472f08a9aa95831ded877cf98816ccf4fd9bf453 Mon Sep 17 00:00:00 2001
From: Robbi Bishop-Taylor <Robbi.BishopTaylor@ga.gov.au>
Date: Tue, 16 Jul 2024 16:02:47 +1000
Subject: [PATCH 2/4] Update utils_intertidal.py

---
 .../sea_ocean_coast/intertidal_c3/utils_intertidal.py          | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
index a63847a3e..41c7ebde5 100644
--- a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
+++ b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
@@ -47,6 +47,9 @@ def multi_date_raw_elevation(data, band, band_mapper=None):
     """
     Compares two elevation layers and calculates difference in elevation.
     """
+    if date_mapper is not None:
+        band = band_mapper(band)
+    
     data1, data2 = (data.sel(time=dt) for dt in data.coords["time"].values)
 
     return data2[band] - data1[band]

From 8f1429a1adb1d128050db500fc9d011fb5d54e02 Mon Sep 17 00:00:00 2001
From: Robbi Bishop-Taylor <Robbi.BishopTaylor@ga.gov.au>
Date: Tue, 16 Jul 2024 16:28:01 +1000
Subject: [PATCH 3/4] Fix code

---
 .../sea_ocean_coast/intertidal_c3/utils_intertidal.py         | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
index 41c7ebde5..fcd46b3cb 100644
--- a/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
+++ b/dev/services/wms/ows_refactored/sea_ocean_coast/intertidal_c3/utils_intertidal.py
@@ -47,9 +47,9 @@ def multi_date_raw_elevation(data, band, band_mapper=None):
     """
     Compares two elevation layers and calculates difference in elevation.
     """
-    if date_mapper is not None:
+    if band_mapper is not None:
         band = band_mapper(band)
-    
+
     data1, data2 = (data.sel(time=dt) for dt in data.coords["time"].values)
 
     return data2[band] - data1[band]

From 80406834163b28770b2707e77b0c62f3321fc23a Mon Sep 17 00:00:00 2001
From: Robbi Bishop-Taylor <Robbi.BishopTaylor@ga.gov.au>
Date: Tue, 16 Jul 2024 16:57:04 +1000
Subject: [PATCH 4/4] Update terria-cube-v8.json

---
 dev/terria/terria-cube-v8.json | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dev/terria/terria-cube-v8.json b/dev/terria/terria-cube-v8.json
index da1d482f3..45683a4a9 100644
--- a/dev/terria/terria-cube-v8.json
+++ b/dev/terria/terria-cube-v8.json
@@ -1093,6 +1093,7 @@
                                     "linkedWcsUrl": "https://ows.dea.ga.gov.au/",
                                     "linkedWcsCoverage": "ga_s2ls_intertidal_cyear_3",
                                     "dateFormat": "'Year: 'yyyy",
+                                    "availableDiffStyles": ["intertidal_elevation_adaptive"],
                                     "leafletUpdateInterval": 750,
                                     "tileErrorHandlingOptions": {
                                         "ignoreUnknownTileErrors": true