package config

import "time"

type gocConfig struct {
	Debug                 bool
	CurWd                 string
	Goflags               []string
	ImportPath            string // import path of the project
	CurPkgDir             string
	CurModProjectDir      string
	TmpModProjectDir      string
	TmpPkgDir             string
	ContainSpecialPattern bool // 参数中包含 ...
	Pkgs                  map[string]*Package
	GOPATH                string
	GOBIN                 string
	IsMod                 bool // deprecated

	GlobalCoverVarImportPath    string
	GlobalCoverVarImportPathDir string

	Host string
	Mode string // cover mode
}

// GocConfig 全局变量，存放 goc 的各种元属性
var GocConfig gocConfig

type goConfig struct {
	BuildA                 bool
	BuildBuildmode         string // -buildmode flag
	BuildMod               string // -mod flag
	BuildModReason         string // reason -mod flag is set, if set by default
	BuildI                 bool   // -i flag
	BuildLinkshared        bool   // -linkshared flag
	BuildMSan              bool   // -msan flag
	BuildN                 bool   // -n flag
	BuildO                 string // -o flag
	BuildP                 int    // -p flag
	BuildPkgdir            string // -pkgdir flag
	BuildRace              bool   // -race flag
	BuildToolexec          string // -toolexec flag
	BuildToolchainName     string
	BuildToolchainCompiler func() string
	BuildToolchainLinker   func() string
	BuildTrimpath          bool // -trimpath flag
	BuildV                 bool // -v flag
	BuildWork              bool // -work flag
	BuildX                 bool // -x flag
	// from buildcontext
	Installsuffix string // -installSuffix
	BuildTags     string // -tags
	// from load
	BuildAsmflags   string
	BuildCompiler   string
	BuildGcflags    string
	BuildGccgoflags string
	BuildLdflags    string

	// mod related
	ModCacheRW bool
	ModFile    string
}

var GoConfig goConfig

// PackageCover holds all the generate coverage variables of a package
type PackageCover struct {
	Package *Package
	Vars    map[string]*FileVar
}

// FileVar holds the name of the generated coverage variables targeting the named file.
type FileVar struct {
	File string
	Var  string
}

// Package map a package output by go list
// this is subset of package struct in: https://github.com/golang/go/blob/master/src/cmd/go/internal/load/pkg.go#L58
type Package struct {
	Dir        string `json:"Dir"`        // directory containing package sources
	ImportPath string `json:"ImportPath"` // import path of package in dir
	Name       string `json:"Name"`       // package name
	Target     string `json:",omitempty"` // installed target for this package (may be executable)
	Root       string `json:",omitempty"` // Go root, Go path dir, or module root dir containing this package

	Module   *ModulePublic `json:",omitempty"`         // info about package's module, if any
	Goroot   bool          `json:"Goroot,omitempty"`   // is this package in the Go root?
	Standard bool          `json:"Standard,omitempty"` // is this package part of the standard Go library?
	DepOnly  bool          `json:"DepOnly,omitempty"`  // package is only a dependency, not explicitly listed

	// Source files
	GoFiles  []string `json:"GoFiles,omitempty"`  // .go source files (excluding CgoFiles, TestGoFiles, XTestGoFiles)
	CgoFiles []string `json:"CgoFiles,omitempty"` // .go source files that import "C"

	// Dependency information
	Deps      []string          `json:"Deps,omitempty"` // all (recursively) imported dependencies
	Imports   []string          `json:",omitempty"`     // import paths used by this package
	ImportMap map[string]string `json:",omitempty"`     // map from source import to ImportPath (identity entries omitted)

	// Error information
	Incomplete bool            `json:"Incomplete,omitempty"` // this package or a dependency has an error
	Error      *PackageError   `json:"Error,omitempty"`      // error loading package
	DepsErrors []*PackageError `json:"DepsErrors,omitempty"` // errors loading dependencies
}

// ModulePublic represents the package info of a module
type ModulePublic struct {
	Path      string        `json:",omitempty"` // module path
	Version   string        `json:",omitempty"` // module version
	Versions  []string      `json:",omitempty"` // available module versions
	Replace   *ModulePublic `json:",omitempty"` // replaced by this module
	Time      *time.Time    `json:",omitempty"` // time version was created
	Update    *ModulePublic `json:",omitempty"` // available update (with -u)
	Main      bool          `json:",omitempty"` // is this the main module?
	Indirect  bool          `json:",omitempty"` // module is only indirectly needed by main module
	Dir       string        `json:",omitempty"` // directory holding local copy of files, if any
	GoMod     string        `json:",omitempty"` // path to go.mod file describing module, if any
	GoVersion string        `json:",omitempty"` // go version used in module
	Error     *ModuleError  `json:",omitempty"` // error loading module
}

// ModuleError represents the error loading module
type ModuleError struct {
	Err string // error text
}

// PackageError is the error info for a package when list failed
type PackageError struct {
	ImportStack []string // shortest path from package named on command line to this one
	Pos         string   // position of error (if present, file:line:col)
	Err         string   // the error itself
}