--- LSP and function navigation keymaps.
--- Uses fzf-lua pickers for go-to-definition, implementation, references,
--- type definitions, symbol search, code actions, rename, hover docs,
--- and diagnostic navigation.
--- @module keymaps.lsp

local keymap = vim.keymap

-- =============================================================================
-- LSP NAVIGATION (FUNCTION NAVIGATION) - Using fzf-lua
-- =============================================================================

--- Primary LSP navigation — definition, implementation, references, type def.
keymap.set("n", "gd", "<cmd>FzfLua lsp_definitions<cr>", { desc = "Go to definition" })
keymap.set("n", "gi", "<cmd>FzfLua lsp_implementations<cr>", { desc = "Go to implementation" })
keymap.set("n", "gr", "<cmd>FzfLua lsp_references<cr>", { desc = "Show references" })
keymap.set("n", "gt", "<cmd>FzfLua lsp_typedefs<cr>", { desc = "Go to type definition" })

--- Symbol search — document and workspace symbols via fzf-lua.
keymap.set("n", "<leader>ds", "<cmd>FzfLua lsp_document_symbols<cr>", { desc = "Document symbols" })
keymap.set("n", "<leader>lw", "<cmd>FzfLua lsp_workspace_symbols<cr>", { desc = "LSP: Workspace symbols" })

--- Code actions, rename, and hover documentation.
keymap.set("n", "<leader>ca", "<cmd>FzfLua lsp_code_actions<cr>", { desc = "Code actions" })
keymap.set("n", "<leader>rn", "<cmd>lua vim.lsp.buf.rename()<cr>", { desc = "Rename" })
keymap.set("n", "H", "<cmd>lua vim.lsp.buf.hover()<cr>", { desc = "Hover documentation" })

--- Diagnostics — workspace list, line float, and prev/next navigation.
keymap.set("n", "<leader>D", "<cmd>FzfLua diagnostics_workspace<cr>", { desc = "Show diagnostics" })
keymap.set("n", "<leader>dd", "<cmd>lua vim.diagnostic.open_float()<cr>", { desc = "Line diagnostics" })
keymap.set("n", "[d", "<cmd>lua vim.diagnostic.goto_prev()<cr>", { desc = "Previous diagnostic" })
keymap.set("n", "]d", "<cmd>lua vim.diagnostic.goto_next()<cr>", { desc = "Next diagnostic" })