local api = vim.api
local fn = vim.fn
local cmd = api.nvim_create_user_command

cmd("W", "w", {})

cmd("GhBrowse", function(opts)
    if fn.executable("gh") < 1 then
        vim.notify("gh not found", 4)
        return
    end

    local region = function()
        local fpath = fn.fnamemodify(fn.expand("%"), ":.:h") .. "/" .. fn.expand("%:t")
        return opts.range > 0 and string.format("%s:%s-%s", fpath, opts.line1, opts.line2) or fpath
    end

    local branch = function()
        local err, head = pcall(vim.call, "FugitiveHead")
        if err or head == "" then
            return "main"
        end
        return head
    end

    require("plenary.job")
        :new({
            command = "gh",
            args = { "browse", "--no-browser", "--branch", branch(), region() },
            on_exit = vim.schedule_wrap(function(job, exit_code)
                if exit_code > 0 then
                    for _, line in ipairs(job:stderr_result()) do
                        vim.notify_once(line, vim.log.levels.ERROR)
                    end
                else
                    fn.setreg("+", job:result()[1])
                    print("url copied")
                end
            end),
        })
        :start()
end, {
    range = true,
    desc = "Copy github url for selected region of current file",
})

cmd("Msg", function()
    local bufnr = api.nvim_create_buf(false, true)
    api.nvim_buf_call(bufnr, function()
        vim.cmd([[
            put =execute('messages') |
            %s:\n:\r:g
        ]])
    end)
    vim.cmd("sbuf + " .. bufnr)
end, { desc = "Redirect and open :messages output in a separate readonly buffer" })