Module:TemplateStarter

Documentation for this module may be created at Module:TemplateStarter/doc

-- Module:TemplateStarter
-- Generates empty template structures for new pages using ConfigRepository

local p = {}

-- Required modules
local ConfigRepository = require('Module:ConfigRepository')
local ErrorHandling = require('Module:ErrorHandling')

-- Cache for template lists to improve performance
local templateListCache = nil
local templateListCacheTime = 0
local CACHE_DURATION = 300 -- 5 minutes in seconds

-- Generate empty template wikitext from template type
function p.generateTemplate(templateType)
    -- Input validation and sanitization
    if not templateType or templateType == "" then
        return "Error: Template type is required"
    end
    
    -- Sanitize input - remove any potentially harmful characters
    templateType = mw.text.trim(tostring(templateType))
    
    if not templateType:match("^[%w_%-]+$") then
        return "Error: Invalid template type format"
    end
    
    -- Create error context for better error handling
    local errorContext = ErrorHandling.createContext("TemplateStarter")
    
    -- Protected function to get configuration
    local function getTemplateConfig()
        local config = ConfigRepository.getConfig(templateType)
        
        if not config then
            return nil, string.format("Template type '%s' not found in ConfigRepository", templateType)
        end
        
        if not config.fields then
            return nil, string.format("Template type '%s' has no fields configuration", templateType)
        end
        
        return config
    end
    
    -- Get configuration with error protection
    local config = ErrorHandling.protect(errorContext, 'getTemplateConfig', getTemplateConfig, nil)
    if not config then
        return "Error: Failed to load template configuration"
    end
    
    -- Pre-allocate lines table for better performance
    local lines = {}
    lines[1] = "{{" .. templateType
    local lineCount = 1
    
    -- Process each field with error protection
    local function processFields()
        for _, field in ipairs(config.fields) do
            -- Skip hidden fields
            if not field.hidden then
                -- Handle fields with multiple keys (prefer single key, fallback to first of multiple)
                local fieldKey = field.key or (field.keys and field.keys[1])
                
                if fieldKey and fieldKey ~= "" then
                    lineCount = lineCount + 1
                    lines[lineCount] = string.format("|%s = ", fieldKey)
                end
            end
        end
        return true
    end
    
    -- Process fields with error protection
    ErrorHandling.protect(errorContext, 'processFields', processFields, false)
    
    -- Close the template
    lineCount = lineCount + 1
    lines[lineCount] = "}}"
    
    -- Join with newlines (more efficient than multiple concatenations)
    return table.concat(lines, "\n")
end

-- Main function to be called from wiki (for testing/preview)
function p.main(frame)
    -- Simple validation without complex error handling for this function
    local args = frame.args
    local parent = frame:getParent()
    local pargs = parent and parent.args or {}
    
    -- Get parameters (check both direct and parent args)
    local articleName = args.articleName or pargs.articleName or args[1] or pargs[1]
    local templateType = args.templateType or pargs.templateType or args[2] or pargs[2]
    
    -- Validate inputs
    if not articleName or mw.text.trim(tostring(articleName)) == "" then
        return "Error: Article name is required"
    end
    
    if not templateType or mw.text.trim(tostring(templateType)) == "" then
        return "Error: Template type is required"
    end
    
    -- Generate the template content
    local content = p.generateTemplate(mw.text.trim(tostring(templateType)))
    
    -- For testing, return the generated content in a pre block
    return string.format('<pre>Page: %s\n\n%s</pre>', 
        mw.text.nowiki(mw.text.trim(tostring(articleName))), 
        mw.text.nowiki(content))
end

-- Generate a dynamic preload template (main function used by JavaScript)
function p.preload(frame)
    local args = frame.args
    local templateType = args.templateType or args[1]
    
    if not templateType or mw.text.trim(tostring(templateType)) == "" then
        return "<!-- No template type specified -->"
    end
    
    return p.generateTemplate(mw.text.trim(tostring(templateType)))
end

-- Get list of available templates with caching
function p.getAvailableTemplates()
    local currentTime = os.time()
    
    -- Check if cache is valid
    if templateListCache and (currentTime - templateListCacheTime) < CACHE_DURATION then
        return templateListCache
    end
    
    -- Simple approach without complex error handling
    local templates = {}
    
    -- Check if ConfigRepository.templates exists
    if ConfigRepository.templates then
        local index = 1
        for templateName, _ in pairs(ConfigRepository.templates) do
            if templateName and templateName ~= "" then
                templates[index] = templateName
                index = index + 1
            end
        end
        table.sort(templates)
    end
    
    -- No fallback - if ConfigRepository fails, return empty list
    -- This ensures we only use data from the single source of truth
    
    -- Update cache
    templateListCache = templates
    templateListCacheTime = currentTime
    
    return templates
end

-- Test function to list available templates (clean output for JavaScript consumption)
function p.listTemplates(frame)
    local templates = p.getAvailableTemplates()
    if #templates == 0 then
        return "<nowiki>No templates available</nowiki>"
    end
    return "<nowiki>" .. table.concat(templates, ", ") .. "</nowiki>"
end

return p