module main

import os
import v.help

fn vpm_search(keywords []string) {
    search_keys := keywords.map(it.replace('_', '-'))
    if settings.is_help {
        help.print_and_exit('search')
    }
    if search_keys.len == 0 {
        vpm_error('specify at least one keyword to search for.')
        exit(2)
    }
    modules := get_all_modules_for_search()
    installed_modules := get_installed_modules()
    joined := search_keys.join(', ')
    mut index := 0
    for mod in modules {
        for k in search_keys {
            if !mod.contains(k) {
                continue
            }
            if index == 0 {
                println('Search results for `${joined}`:\n')
            }
            index++
            mut parts := mod.split('.')
            // in case the author isn't present
            if parts.len == 1 {
                parts << parts[0]
                parts[0] = ' '
            } else {
                parts[0] = ' by ${parts[0]} '
            }
            installed := if mod in installed_modules { ' (installed)' } else { '' }
            println('${index}. ${parts[1]}${parts[0]}[${mod}]${installed}')
            break
        }
    }
    if index == 0 {
        vroot := os.real_path(os.dir(vexe))
        mut messages := ['No module(s) found for `${joined}` .']
        for vlibmod in search_keys {
            if os.is_dir(os.join_path(vroot, 'vlib', vlibmod)) {
                messages << 'There is already an existing `${vlibmod}` module in vlib, so you can just `import ${vlibmod}` .'
            }
        }
        for m in messages {
            println(m)
        }
    } else {
        eprintln('\nUse `v install author_name.module_name` to install the module.')
    }
}