%installDeps Installs/updates dependencies of the project
%   Inputs:
%     - (1) depList (optional, default: call getDepList): An array of 
%               DepMatRepo objects containing info about each dependency.
%     - (2) depSubDir (optional, default: 'external'): Name of subdirectory 
%               for dependencies. If you use something other than the
%               default, don't forget to add it to .gitignore so that git
%               doesn't track it. 
%     - (3 and later): will be passed to PackMan as the 3rd and later inputs.
%   Outputs:
%     - (1) pm (optional): the package manager object. This object can be
%               used to manually install deps by calling:
%                   pm.install(); 
%               It can also be used for adding dep paths to path by calling
%                   addpath(pm.genPath{:})
% 
%   Usage example:
%       % Modify getDepList.m to return the list of all dependencies.
%       % Then simply call this any time you want to install/update:
%       installDeps

function varargout = installDeps(varargin)
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Get the list of dependencies
folderName = pwd;  
nonGitPaths = genNonGitPath(folderName);

if (all(cellfun(@exist, nonGitPaths)== 7))
    addpath(nonGitPaths{:});
    s = which('installDeps.m', '-ALL');
    if length(s) >= 1
        installDepsPath = s{1};
        dpDirPth = fileparts(installDepsPath);
        getDepListFunction = fullfile(dpDirPth, 'getDepList.m');
        run(getDepListFunction);
        depList = ans;

        depSubDir = fullfile(fileparts(installDepsPath),'external');
        
        if nargin ~= 0
            depList = varargin{1};
        end
        
        installPackMan( depSubDir, depList );
    end
else
    error('Unexistent path found!');
end

if nargin ~= 0
    depList = varargin{1};
else

end

pm = PackMan(depList, depSubDir); % Install other dependencies

if nargout < 1
    pm.install();
else
    varargout{1} = pm;
end

function depDirPath = getDepDirPath( depSubDir )
% Generates path to dependency directory based on the path of the current
% file
% Inputs: 
% (1) depSubDir: relative path of the dependency directory
% Outputs:
% (1) full path of the dependency subdir

thisFilePath = mfilename('fullpath');
[thisFileDir, ~, ~] = fileparts(thisFilePath);
depDirPath = fullfile(thisFileDir, depSubDir);

function installPackMan( depDirPath, depList )
% Makes sure DepMat is available and in the path, so that PackMan can
% install other dependencies
% Inputs: 
% (1) depDirPath: path to dependency directory
% Outputs: 
% (none)
% Usage example:
% installPackMan( depDirPath );

packageManagerName = 'PackMan';
packManDir = fullfile(depDirPath, packageManagerName);
packageManagerDep = depList(strcmp({depList.Name}, packageManagerName));
try
%         Name, Branch, Url, FolderName, Commit, GetLatest
    command = ['git clone --single-branch --branch ', packageManagerDep.Branch,' ', packageManagerDep.Url, ' "',packManDir,'"'];
    [status, cmdout] = system(command);
    if (~status), fprintf('%s', cmdout); end
catch
    
end

packManSourceDir = fullfile(packManDir,'source');
packManPath = genNonGitPath(packManSourceDir);
addpath(packManPath{:});

function pathList = genNonGitPath(folderName)
%genPath - Description
%
% Syntax: output = genPath(input)
%
% Long description
    
paths = genpath(folderName);            
pathList = split(paths, ';');
pathList = rmmissing(pathList);
pathList = pathList(~contains(pathList, '\.git'));