using System;
using System.Collections.Generic;

namespace SourceGit.Commands {
    public class Config : Command {        
        public Config(string repository) {
            WorkingDirectory = repository;
            Context = repository;
            RaiseError = false;
        }

        public Dictionary<string, string> ListAll() {
            Args = "config -l";

            var output = ReadToEnd();
            var rs = new Dictionary<string, string>();
            if (output.IsSuccess) {
                var lines = output.StdOut.Split(new char[] { '\r', '\n' }, StringSplitOptions.RemoveEmptyEntries);
                foreach (var line in lines) {
                    var idx = line.IndexOf('=', StringComparison.Ordinal);
                    if (idx != -1) {
                        var key = line.Substring(0, idx).Trim();
                        var val = line.Substring(idx+1).Trim();
                        if (rs.ContainsKey(key)) {
                            rs[key] = val;
                        } else {
                            rs.Add(key, val);
                        }                        
                    }
                }
            }

            return rs;
        }

        public string Get(string key) {
            Args = $"config {key}";
            return ReadToEnd().StdOut.Trim();
        }

        public bool Set(string key, string value, bool allowEmpty = false) {
            if (!allowEmpty && string.IsNullOrWhiteSpace(value)) {
                if (string.IsNullOrEmpty(WorkingDirectory)) {
                    Args = $"config --global --unset {key}";
                } else {
                    Args = $"config --unset {key}";
                }
            } else {
                if (string.IsNullOrWhiteSpace(WorkingDirectory)) {
                    Args = $"config --global {key} \"{value}\"";
                } else {
                    Args = $"config {key} \"{value}\"";
                }
            }

            return Exec();
        }
    }
}