Add template support.

config.go

@@ -0,0 +1,141 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/evanw/esbuild/pkg/api"
+	"gopkg.in/yaml.v3"
+)
+
+func cfgToESBuildCfg(cfg options) api.BuildOptions {
+	return api.BuildOptions{
+		EntryPoints: cfg.ESBuild.EntryPoints,
+		Outdir:      cfg.ESBuild.Outdir,
+		Outfile:     cfg.ESBuild.Outfile,
+		Sourcemap:   api.SourceMap(cfg.ESBuild.Sourcemap),
+		Format:      api.Format(cfg.ESBuild.Format),
+		Splitting:   cfg.ESBuild.Splitting,
+		Platform:    api.Platform(cfg.ESBuild.Platform),
+		Bundle:      cfg.ESBuild.Bundle,
+		Write:       cfg.ESBuild.Write,
+		LogLevel:    api.LogLevel(cfg.ESBuild.LogLevel),
+	}
+}
+
+type options struct {
+	ESBuild struct {
+		EntryPoints      []string `yaml:"entryPoints"`
+		Outdir           string   `yaml:"outdir"`
+		Outfile          string   `yaml:"outfile"`
+		Sourcemap        int      `yaml:"sourcemap"`
+		Format           int      `yaml:"format"`
+		Splitting        bool     `yaml:"splitting"`
+		Platform         int      `yaml:"platform"`
+		Bundle           bool     `yaml:"bundle"`
+		Write            bool     `yaml:"write"`
+		LogLevel         int      `yaml:"logLevel"`
+		PurgeBeforeBuild bool     `yaml:"purgeBeforeBuild"`
+	} `yaml:"esbuild"`
+	Watch struct {
+		Paths   []string `yaml:"paths"`
+		Exclude []string `yaml:"exclude"`
+	}
+	Serve struct {
+		Path string `yaml:"path"`
+		Port int    `yaml:"port"`
+	} `yaml:"serve"`
+	Copy []struct {
+		Src  string `yaml:"src"`
+		Dest string `yaml:"dest"`
+	} `yaml:"copy"`
+	Download []struct {
+		Url  string `yaml:"url"`
+		Dest string `yaml:"dest"`
+	} `yaml:"download"`
+	Replace []struct {
+		Pattern string `yaml:"pattern"`
+		Search  string `yaml:"search"`
+		Replace string `yaml:"replace"`
+	} `yaml:"replace"`
+	Link struct {
+		From string `yaml:"from"`
+		To   string `yaml:"to"`
+	} `yaml:"link"`
+	ProductionBuildOptions struct {
+		CmdPostBuild string `yaml:"cmdPostBuild"`
+	} `yaml:"productionBuildOptions"`
+}
+
+func readCfg(cfgPath string) []options {
+	if filepath.Ext(cfgPath) == ".json" {
+		jsonOpts := readJsonCfg(cfgPath)
+
+		data, err := yaml.Marshal(jsonOpts)
+		if err != nil {
+			fmt.Printf("%+v\n", err)
+			os.Exit(1)
+		}
+
+		yamlPath := strings.TrimSuffix(cfgPath, ".json") + ".yaml"
+
+		err = os.WriteFile(yamlPath, data, 0755)
+		if err != nil {
+			fmt.Printf("%+v\n", err)
+			os.Exit(1)
+		}
+
+		cfgPath = yamlPath
+	}
+
+	cfgContent, err := os.ReadFile(cfgPath)
+
+	if err != nil {
+		fmt.Printf("%+v\n", err)
+		os.Exit(1)
+	}
+
+	optsSetups := []options{}
+
+	err = yaml.Unmarshal(cfgContent, &optsSetups)
+	if err != nil {
+		opt := options{}
+		err = yaml.Unmarshal(cfgContent, &opt)
+		if err != nil {
+			fmt.Printf("%+v\n", err)
+			os.Exit(1)
+		}
+
+		optsSetups = append(optsSetups, opt)
+	}
+
+	return optsSetups
+}
+
+func readJsonCfg(cfgPath string) []options {
+	cfgContent, err := os.ReadFile(cfgPath)
+
+	if err != nil {
+		fmt.Printf("%+v\n", err)
+		os.Exit(1)
+	}
+
+	optsSetups := []options{}
+
+	err = json.Unmarshal(cfgContent, &optsSetups)
+	if err != nil {
+		opt := options{}
+		err = json.Unmarshal(cfgContent, &opt)
+		if err != nil {
+			fmt.Printf("%+v\n", err)
+			os.Exit(1)
+		}
+
+		optsSetups = append(optsSetups, opt)
+	}
+
+	return optsSetups
+}