Reduced run_scenario from 2 functions to 1 with same functionality (#349

)

* Reduced run_scenario from 2 functions to 1 with same functionality

* Apply suggestions from code review

Co-authored-by: Abel Soares Siqueira <nepper271@gmail.com>
Co-authored-by: Ni Wang <125902905+gnawin@users.noreply.github.com>

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Co-authored-by: Abel Soares Siqueira <nepper271@gmail.com>
Co-authored-by: Ni Wang <125902905+gnawin@users.noreply.github.com>

src/run-scenario.jl

@@ -1,25 +1,21 @@
 export run_scenario
 
 """
-    run_scenario(input_folder)
-    run_scenario(input_folder, output_folder)
+    run_scenario(input_folder[, output_folder])
 
-Run the scenario in the given input_folder and return the sets, parameters, and solution.
-If the output_folder is specified, save the sets, parameters, and solution to the output_folder.
+Run the scenario in the given `input_folder` and return the sets, parameters, and solution.
+The `output_folder` is optional. If it is specified, save the sets, parameters, and solution to the `output_folder`.
 """
-function run_scenario(input_folder::AbstractString; write_lp_file = false)
-    energy_problem = create_energy_problem_from_csv_folder(input_folder)
-    create_model!(energy_problem; write_lp_file = write_lp_file)
-    solve_model!(energy_problem)
-    return energy_problem
-end
-
 function run_scenario(
     input_folder::AbstractString,
-    output_folder::AbstractString;
+    output_folder::String = "";
     write_lp_file = false,
 )
-    energy_problem = run_scenario(input_folder; write_lp_file)
-    save_solution_to_file(output_folder, energy_problem)
+    energy_problem = create_energy_problem_from_csv_folder(input_folder)
+    create_model!(energy_problem; write_lp_file = write_lp_file)
+    solve_model!(energy_problem)
+
+    output_folder == "" ? nothing : save_solution_to_file(output_folder, energy_problem)
+
     return energy_problem
 end