local HIGHLIGHTS = {
    GitDeleted = "Removed",
    GitIgnored = "Comment",
    GitUnstaged = "Changed",
    GitRenamed = "GitStaged",
    GitSha = "Identifier",
    GitStaged = "Constant",
    GitUnmerged = "Todo",
    GitUnpulled = "Removed",
    GitUnpushed = "Added",
    GitUntracked = "Added",
}

local M = {}

function M.init()
    for name, link in pairs(HIGHLIGHTS) do
        vim.api.nvim_set_hl(0, name, { link = link, default = true })
    end

    local group = vim.api.nvim_create_augroup("ow.git", { clear = true })

    vim.api.nvim_create_autocmd({ "BufReadPost", "BufNewFile" }, {
        group = group,
        callback = function(args)
            require("git.repo").track(args.buf)
        end,
    })
    vim.api.nvim_create_autocmd({ "BufWritePost", "FileChangedShellPost" }, {
        group = group,
        callback = function(args)
            require("git.repo").refresh(args.buf)
        end,
    })
    vim.api.nvim_create_autocmd({ "BufDelete", "BufWipeout" }, {
        group = group,
        callback = function(args)
            require("git.repo").unbind(args.buf)
        end,
    })
    vim.api.nvim_create_autocmd("FocusGained", {
        group = group,
        callback = function()
            require("git.repo").refresh_all()
        end,
    })
    vim.api.nvim_create_autocmd("VimLeavePre", {
        group = group,
        callback = function()
            require("git.repo").stop_all()
        end,
    })

    vim.api.nvim_create_autocmd({ "VimEnter", "DirChanged", "TabEnter" }, {
        group = group,
        callback = function()
            require("git.repo").update_cwd_repo()
        end,
    })
    vim.api.nvim_create_autocmd("TabClosed", {
        group = group,
        callback = function(args)
            local tab = tonumber(args.file) --[[@as integer?]]
            if tab then
                require("git.repo").release_tab(tab)
            end
        end,
    })

    vim.api.nvim_create_autocmd("BufReadCmd", {
        pattern = "git://*",
        group = group,
        callback = function(args)
            require("git.object").read_uri(args.buf)
        end,
    })

    vim.api.nvim_create_autocmd("BufReadCmd", {
        pattern = "gitlog://*",
        group = group,
        callback = function(args)
            require("git.log").read_uri(args.buf)
        end,
    })
    vim.api.nvim_create_user_command("Glog", function(opts)
        require("git.log").run_glog(opts)
    end, {
        nargs = "*",
        complete = function(...)
            return require("git.log").complete_glog(...)
        end,
        desc = "Show git log",
    })

    local function diff_split_cmd(vertical)
        return function(opts)
            require("git.diff").split({
                rev = opts.args ~= "" and opts.args or nil,
                vertical = vertical,
            })
        end
    end
    local function complete_rev(...)
        return require("git.cmd").complete_rev(...)
    end
    vim.api.nvim_create_user_command("Gdiffsplit", diff_split_cmd(true), {
        nargs = "?",
        complete = complete_rev,
        desc = "Diff against <rev>",
    })
    vim.api.nvim_create_user_command("Gvdiffsplit", diff_split_cmd(true), {
        nargs = "?",
        complete = complete_rev,
        desc = "Diff against <rev> (vertical split)",
    })
    vim.api.nvim_create_user_command("Ghdiffsplit", diff_split_cmd(false), {
        nargs = "?",
        complete = complete_rev,
        desc = "Diff against <rev> (horizontal split)",
    })
    vim.api.nvim_create_user_command("Gedit", function(opts)
        vim.cmd.edit({
            args = { require("git.object").URI_PREFIX .. opts.args },
            magic = { file = false },
        })
    end, {
        nargs = 1,
        complete = complete_rev,
        desc = "Edit a git object (<rev>)",
    })

    vim.api.nvim_create_user_command("G", function(opts)
        require("git.cmd").run(opts.fargs)
    end, {
        nargs = "*",
        complete = function(...)
            return require("git.cmd").complete(...)
        end,
    })

    vim.api.nvim_create_user_command("Grefresh", function()
        require("git.repo").refresh_all()
    end, { desc = "Refresh git status for all repos" })
end

return M