code_review: PR #596

- Add `ViewModels.Preference.PrepareOpenAIPrompt()` method to generate default prompt instead of a const fallback value. Therefore, it is more convenient for us to modify the default value in the Preference dialog.
- Modify the default prompts. Rename `SubjectPrompt` to `GenerateSubjectPrompt`. Rename `SummaryPrompt` to `AnalyzeDiffPrompt`.
- Rewrite the way to build OpenAI user content for subject generation

Signed-off-by: leo <longshuang@msn.cn>

src/Commands/GenerateCommitMessage.cs

@@ -10,33 +10,6 @@ namespace SourceGit.Commands
     /// </summary>
     public class GenerateCommitMessage
     {
-        private const string DEFAULT_SUMMARY_PROMPT = """
-            You are an expert developer specialist in creating commits.
-            Provide a super concise one sentence overall changes summary of the user `git diff` output following strictly the next rules:
-            - Do not use any code snippets, imports, file routes or bullets points.
-            - Do not mention the route of file that has been change.
-            - Simply describe the MAIN GOAL of the changes.
-            - Output directly the summary in plain text.
-            """;
-
-        private const string DEFAULT_SUBJECT_PROMPT = """
-            You are an expert developer specialist in creating commits messages.
-            Your only goal is to retrieve a single commit message.
-            Based on the provided user changes, combine them in ONE SINGLE commit message retrieving the global idea, following strictly the next rules:
-            - Assign the commit {type} according to the next conditions:
-              feat: Only when adding a new feature.
-              fix: When fixing a bug.
-              docs: When updating documentation.
-              style: When changing elements styles or design and/or making changes to the code style (formatting, missing semicolons, etc.) without changing the code logic.
-              test: When adding or updating tests.
-              chore: When making changes to the build process or auxiliary tools and libraries.
-              revert: When undoing a previous commit.
-              refactor: When restructuring code without changing its external behavior, or is any of the other refactor types.
-            - Do not add any issues numeration, explain your output nor introduce your answer.
-            - Output directly only one commit message in plain text with the next format: {type}: {commit_message}.
-            - Be as concise as possible, keep the message under 50 characters.
-            """;
-
         public class GetDiffContent : Command
         {
             public GetDiffContent(string repo, Models.DiffOption opt)
@@ -59,31 +32,36 @@ namespace SourceGit.Commands
         {
             try
             {
-                var summaries = new List<string>();
+                var summarybuilder = new StringBuilder();
+                var bodyBuilder = new StringBuilder();
                 foreach (var change in _changes)
                 {
                     if (_cancelToken.IsCancellationRequested)
                         return "";
 
                     _onProgress?.Invoke($"Analyzing {change.Path}...");
+
                     var summary = GenerateChangeSummary(change);
-                    summaries.Add(summary);
+                    summarybuilder.Append("- ");
+                    summarybuilder.Append(summary);
+                    summarybuilder.Append("(file: ");
+                    summarybuilder.Append(change.Path);
+                    summarybuilder.Append(")");
+                    summarybuilder.AppendLine();
+
+                    bodyBuilder.Append("- ");
+                    bodyBuilder.Append(summary);
+                    bodyBuilder.AppendLine();
                 }
 
                 if (_cancelToken.IsCancellationRequested)
                     return "";
 
                 _onProgress?.Invoke($"Generating commit message...");
-                var builder = new StringBuilder();
-                builder.Append(GenerateSubject(string.Join("", summaries)));
-                builder.Append("\n");
-                foreach (var summary in summaries)
-                {
-                    builder.Append("\n- ");
-                    builder.Append(summary.Trim());
-                }
 
-                return builder.ToString();
+                var body = bodyBuilder.ToString();
+                var subject = GenerateSubject(summarybuilder.ToString());
+                return string.Format("{0}\n\n{1}", subject, body);
             }
             catch (Exception e)
             {
@@ -97,12 +75,7 @@ namespace SourceGit.Commands
             var rs = new GetDiffContent(_repo, new Models.DiffOption(change, false)).ReadToEnd();
             var diff = rs.IsSuccess ? rs.StdOut : "unknown change";
 
-            var prompt = string.IsNullOrWhiteSpace(Models.OpenAI.SummaryPrompt)
+            var rsp = Models.OpenAI.Chat(Models.OpenAI.AnalyzeDiffPrompt, $"Here is the `git diff` output: {diff}", _cancelToken);
-                ? DEFAULT_SUMMARY_PROMPT
-                : Models.OpenAI.SummaryPrompt;
-
-            var rsp = Models.OpenAI.Chat(prompt, $"Here is the `git diff` output: {diff}", _cancelToken);
-
             if (rsp != null && rsp.Choices.Count > 0)
                 return rsp.Choices[0].Message.Content;
 
@@ -111,12 +84,7 @@ namespace SourceGit.Commands
 
         private string GenerateSubject(string summary)
         {
-            var prompt = string.IsNullOrWhiteSpace(Models.OpenAI.SubjectPrompt)
+            var rsp = Models.OpenAI.Chat(Models.OpenAI.GenerateSubjectPrompt, $"Here are the summaries changes:\n{summary}", _cancelToken);
-                ? DEFAULT_SUBJECT_PROMPT
-                : Models.OpenAI.SubjectPrompt;
-
-            var rsp = Models.OpenAI.Chat(prompt, $"Here are the summaries changes: {summary}", _cancelToken);
-
             if (rsp != null && rsp.Choices.Count > 0)
                 return rsp.Choices[0].Message.Content;
 

src/Models/OpenAI.cs

@@ -94,13 +94,13 @@ namespace SourceGit.Models
             set;
         }
 
-        public static string SubjectPrompt
+        public static string AnalyzeDiffPrompt
         {
             get;
             set;
         }
 
-        public static string SummaryPrompt
+        public static string GenerateSubjectPrompt
         {
             get;
             set;

src/Resources/Locales/en_US.axaml

@@ -400,34 +400,11 @@
   <x:String x:Key="Text.Period.YearsAgo" xml:space="preserve">{0} years ago</x:String>
   <x:String x:Key="Text.Preference" xml:space="preserve">Preference</x:String>
   <x:String x:Key="Text.Preference.AI" xml:space="preserve">OPEN AI</x:String>
-  <x:String x:Key="Text.Preference.AI.Server" xml:space="preserve">Server</x:String>
+  <x:String x:Key="Text.Preference.AI.AnalyzeDiffPrompt" xml:space="preserve">Analyze Diff Prompt</x:String>
   <x:String x:Key="Text.Preference.AI.ApiKey" xml:space="preserve">API Key</x:String>
+  <x:String x:Key="Text.Preference.AI.GenerateSubjectPrompt" xml:space="preserve">Generate Subject Prompt</x:String>
   <x:String x:Key="Text.Preference.AI.Model" xml:space="preserve">Model</x:String>
-  <x:String x:Key="Text.Preference.AI.SummaryPrompt" xml:space="preserve">Summary Prompt</x:String>
+  <x:String x:Key="Text.Preference.AI.Server" xml:space="preserve">Server</x:String>
-  <x:String x:Key="Text.Preference.AI.SubjectPrompt" xml:space="preserve">Subject Prompt</x:String>
-  <x:String x:Key="Text.Preference.AI.SummaryPromptHint" xml:space="preserve">You are an expert developer specialist in creating commits.
-Provide a super concise one sentence overall changes summary of the user `git diff` output following strictly the next rules:
-- Do not use any code snippets, imports, file routes or bullets points.
-- Do not mention the route of file that has been change.
-- Simply describe the MAIN GOAL of the changes.
-- Output directly the summary in plain text.
-</x:String>
-  <x:String x:Key="Text.Preference.AI.SubjectPromptHint" xml:space="preserve">You are an expert developer specialist in creating commits messages.
-Your only goal is to retrieve a single commit message.
-Based on the provided user changes, combine them in ONE SINGLE commit message retrieving the global idea, following strictly the next rules:
-- Assign the commit {type} according to the next conditions:
-  feat: Only when adding a new feature.
-  fix: When fixing a bug.
-  docs: When updating documentation.
-  style: When changing elements styles or design and/or making changes to the code style (formatting, missing semicolons, etc.) without changing the code logic.
-  test: When adding or updating tests.
-  chore: When making changes to the build process or auxiliary tools and libraries.
-  revert: When undoing a previous commit.
-  refactor: When restructuring code without changing its external behavior, or is any of the other refactor types.
-- Do not add any issues numeration, explain your output nor introduce your answer.
-- Output directly only one commit message in plain text with the next format: {type}: {commit_message}.
-- Be as concise as possible, keep the message under 50 characters.
-</x:String>
   <x:String x:Key="Text.Preference.Appearance" xml:space="preserve">APPEARANCE</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFont" xml:space="preserve">Default Font</x:String>
   <x:String x:Key="Text.Preference.Appearance.DefaultFontSize" xml:space="preserve">Default Font Size</x:String>

src/ViewModels/Preference.cs

@@ -25,6 +25,7 @@ namespace SourceGit.ViewModels
                 _instance.PrepareGit();
                 _instance.PrepareShellOrTerminal();
                 _instance.PrepareWorkspaces();
+                _instance.PrepareOpenAIPrompt();
 
                 return _instance;
             }
@@ -315,27 +316,27 @@ namespace SourceGit.ViewModels
             }
         }
 
-        public string OpenAISubjectPrompt
+        public string OpenAIAnalyzeDiffPrompt
         {
-            get => Models.OpenAI.SubjectPrompt;
+            get => Models.OpenAI.AnalyzeDiffPrompt;
             set
             {
-                if (value != Models.OpenAI.SubjectPrompt)
+                if (value != Models.OpenAI.AnalyzeDiffPrompt)
                 {
-                    Models.OpenAI.SubjectPrompt = value;
+                    Models.OpenAI.AnalyzeDiffPrompt = value;
                     OnPropertyChanged();
                 }
             }
         }
 
-        public string OpenAISummaryPrompt
+        public string OpenAIGenerateSubjectPrompt
         {
-            get => Models.OpenAI.SummaryPrompt;
+            get => Models.OpenAI.GenerateSubjectPrompt;
             set
             {
-                if (value != Models.OpenAI.SummaryPrompt)
+                if (value != Models.OpenAI.GenerateSubjectPrompt)
                 {
-                    Models.OpenAI.SummaryPrompt = value;
+                    Models.OpenAI.GenerateSubjectPrompt = value;
                     OnPropertyChanged();
                 }
             }
@@ -553,6 +554,45 @@ namespace SourceGit.ViewModels
             }
         }
 
+        private void PrepareOpenAIPrompt()
+        {
+            if (string.IsNullOrEmpty(Models.OpenAI.AnalyzeDiffPrompt))
+            {
+                Models.OpenAI.AnalyzeDiffPrompt = """
+                    You are an expert developer specialist in creating commits.
+                    Provide a super concise one sentence overall changes summary of the user `git diff` output following strictly the next rules:
+                    - Do not use any code snippets, imports, file routes or bullets points.
+                    - Do not mention the route of file that has been change.
+                    - Write clear, concise, and descriptive messages that explain the MAIN GOAL made of the changes.
+                    - Use the present tense and active voice in the message, for example, "Fix bug" instead of "Fixed bug.".
+                    - Use the imperative mood, which gives the message a sense of command, e.g. "Add feature" instead of "Added feature".
+                    - Avoid using general terms like "update" or "change", be specific about what was updated or changed.
+                    - Avoid using terms like "The main goal of", just output directly the summary in plain text
+                    """;
+            }
+
+            if (string.IsNullOrEmpty(Models.OpenAI.GenerateSubjectPrompt))
+            {
+                Models.OpenAI.GenerateSubjectPrompt = """
+                    You are an expert developer specialist in creating commits messages.
+                    Your only goal is to retrieve a single commit message.
+                    Based on the provided user changes, combine them in ONE SINGLE commit message retrieving the global idea, following strictly the next rules:
+                    - Assign the commit {type} according to the next conditions:
+                        feat: Only when adding a new feature.
+                        fix: When fixing a bug.
+                        docs: When updating documentation.
+                        style: When changing elements styles or design and/or making changes to the code style (formatting, missing semicolons, etc.) without changing the code logic.
+                        test: When adding or updating tests.
+                        chore: When making changes to the build process or auxiliary tools and libraries.
+                        revert: When undoing a previous commit.
+                        refactor: When restructuring code without changing its external behavior, or is any of the other refactor types.
+                    - Do not add any issues numeration, explain your output nor introduce your answer.
+                    - Output directly only one commit message in plain text with the next format: {type}: {commit_message}.
+                    - Be as concise as possible, keep the message under 50 characters.
+                    """;
+            }
+        }
+
         private RepositoryNode FindNodeRecursive(string id, List<RepositoryNode> collection)
         {
             foreach (var node in collection)

src/Views/Preference.axaml

@@ -499,31 +499,27 @@
                        Text="{Binding OpenAIApiKey, Mode=TwoWay}"/>
 
               <TextBlock Grid.Row="3" Grid.Column="0"
-                         Text="{DynamicResource Text.Preference.AI.SubjectPrompt}"
+                         Text="{DynamicResource Text.Preference.AI.AnalyzeDiffPrompt}"
                          HorizontalAlignment="Right"
                          Margin="0,0,16,0"/>
-
               <TextBox Grid.Row="3" Grid.Column="1"
                        Height="120"
                        CornerRadius="3"
                        VerticalContentAlignment="Top"
-                       Text="{Binding OpenAISubjectPrompt, Mode=TwoWay}"
+                       Text="{Binding OpenAIAnalyzeDiffPrompt, Mode=TwoWay}"
                        AcceptsReturn="true"
-                       Watermark="{DynamicResource Text.Preference.AI.SubjectPromptHint}"
                        TextWrapping="Wrap"/>
 
               <TextBlock Grid.Row="4" Grid.Column="0"
-                         Text="{DynamicResource Text.Preference.AI.SummaryPrompt}"
+                         Text="{DynamicResource Text.Preference.AI.GenerateSubjectPrompt}"
                          HorizontalAlignment="Right"
                          Margin="0,0,16,0"/>
-
               <TextBox Grid.Row="4" Grid.Column="1"
                        Height="120"
                        CornerRadius="3"
                        VerticalContentAlignment="Top"
-                       Text="{Binding OpenAISummaryPrompt, Mode=TwoWay}"
+                       Text="{Binding OpenAIGenerateSubjectPrompt, Mode=TwoWay}"
                        AcceptsReturn="true"
-                       Watermark="{DynamicResource Text.Preference.AI.SummaryPromptHint}"
                        TextWrapping="Wrap"/>
             </Grid>
           </StackPanel>