Base.show method for GraceReport (#17)

Author: fonsp

src/GracefulPkg.jl

@@ -29,6 +29,7 @@ include("./apply strategies.jl")
 
 include("./Pkg API.jl")
 
+include("./io.jl")
 
 
 

src/io.jl

@@ -0,0 +1,69 @@
+
+
+function Base.showerror(io::IO, nw::GracefulPkg.NothingWorked)
+    printstyled(io, "GracefulPkg.NothingWorked: The task failed, and no strategies from GracefulPkg could fix it...\n"; bold=true)
+    
+    report = nw.report
+    
+    show(io, MIME"text/plain"(), report)
+end
+
+function action_text_not_empty(action::Strategy)
+    s = action_text(action)
+    isempty(s) ? "Doing nothing" : s
+end
+
+function Base.show(io::IO, ::MIME"text/plain", report::GracefulPkg.GraceReport)
+    reps = report.strategy_reports
+    
+    printstyled(io, "=== BEGIN GRACEFULPKG REPORT ===\n"; color=:light_black)
+    
+    if length(reps) == 1 && is_success(report) && reps[1].strategy isa StrategyDoNothing
+        printstyled(io, "The task was successfully completed without any actions.\n"; color=:green)
+    elseif !isempty(reps)
+        actions = unique!([action_text_not_empty(r.strategy) for r in reps])
+        
+        println(io, "I tried the following actions:")
+        for action in actions
+            println(io, " - $(action)")
+        end
+        if is_success(report)
+            printstyled(io, "And the last one worked!\n"; color=:green)
+        else
+            print(io, "But in the end, ")
+            printstyled(io, "nothing worked :( \n"; color=:light_red, bold=true)
+            println(io, "Here is more information:")
+        end
+        
+        println(io)
+        
+    
+        
+        last_shown_exception = Ref("asdf")
+        
+        for r in reps
+            e_str = sprint(showerror, r.exception; context=io)
+            printstyled(io, "-----------\n"; color=:light_black)
+            printstyled(io, "I applied the strategy: $(action_text_not_empty(r.strategy))...\n"; bold=true)
+            # println(io)
+            if is_success(r)
+                printstyled(io, "✔ Task successfully completed.\n"; color=:light_green)
+            else
+                printstyled(io, "⨯ Task failed. "; color=:light_red)
+                printstyled(io, "Captured exception:\n"; color=:light_yellow)
+                printstyled(io, e_str == last_shown_exception[] ? "(same as previous)" : e_str)
+                last_shown_exception[] = e_str
+                println(io)
+            end
+            
+            
+            r.project_changed && printstyled(io, "(The Project.toml was changed.)\n"; color=:light_black)
+            r.manifest_changed && printstyled(io, "(The Manifest.toml was changed.)\n"; color=:light_black)
+            r.registry_changed && printstyled(io, "(The registry was changed.)\n"; color=:light_black)
+        end
+    
+    end
+    println(io)
+    
+    printstyled(io, "=== END GRACEFULPKG REPORT ===\n"; color=:light_black)
+end